Thank you for a video that was straight to the point, and I didn't have to go to electronics class. Did this install (after watching your video) in 45 mins. Thanks again.
on the ignition source (85) what amp fuse (in the fuse box) would you suggest for two separate relays wired together? And could I use a power distribution block?
Very cool, i just ran a 30 Amp fused wire to power wire on fan from battery and 210-195 coolant switch, with a 195 engine thermostat to ground on the fan. On my 5.0 Ford Ranger.
@Jmaddox_14 check live data, watch the temperature rise on the screen, if it gets to 210 and no fans then replace switch or check wiring, ensure the fan actually works when it gets 12 volts. Iv got a bad fan out of the box before.
Thank God! I thought I was confused but it turns out the wire was wrong. I kept going through my head thinking ''if I hard ground the black, what the hell is the switch for, and if so are they expecting me to wire the hot side to a one wire thermal switch?'' I knew neither would work and figured id take a UA-cam break lol.
Quick question you mentioned a one terminal switch. My sensor has 2 terminals. Would I hook it up the same way? And just leave one terminal empty. Or is the other terminal for a 2nd fan? THANK YOU IN ADVANCED.
Thanks for takin the time to make this video. After endless videos and forums of over complicating the process, yours made perfect sense and understandable.
Good explanation, wonder why alloy works couldn’t just print that on set of instructions and put it in the box??? Anyway, good job on the video. If you can’t follow those instructions you just gave there’s something wrong lol.
That would’ve made to much sense for AW to do, I just ordered the 03 suburban aluminum duel fan setup from AW for $321.46 and no information on wiring up and going from clutch fan to electric fan setup and little info on videos most are jokes or clickbait, I kinda figured AWG was to small for two fans just like with HID HO kits these companies need to and option for heavy duty relay wiring kits make life easier
Thank you for taking the time and doing a very informative video. My local shop wanted to charge me 350 to do this and I did it myself in 45mins after watching your video. Thanks Bro
Thank you. I ran dual relay but how do I get the High Speed Fan for AC ? Right now I just manage the fan with a switch & I just let the low speed fan to ru every time I turn on my engine
Thanks for explaining the problem with the black ground wire. Why the manufacturer put that extra grounding loop is bizarre. Unless you want the fan running all the time. I disconnected it and now the fan comes on at the right temperature. Thanks again. Great explanation.
Honestly I have not hooked up one of these kits in over 10 years and this channel is only four years old next month lol. I switched to fuel injection an LS engines 10 years ago so I’ve always used the computer to run my fans.
Just purchased the aluminum radiator with dual fans from alloy works. Did not like the relay kit that came with it. So I went ahead and bought the PAINLESS brand relay kit. Part# 30116. Dual fan/ dual activation fan relay kit for A/c function. Will be installing all of it this Saturday. Hope everything goes smooth. Thanks for the explanation.
@@oliverlevy7586 man. I completely removed radiator and fans and went back to stock. The fans gave out in the middle of rush hour traffic. Both burned up. Luckily AlloyWorks refunded me the full amount with no return necessary. Which was a plus. Was really unhappy. Oh and also the first radiator setup started leaking. Sent me a new one under warranty then the fans gave out after that. So I left the PAINLESS HARNESS but went back to stock radiator and clutch fan until further notice. Probably going to make a custom shroud and get a nice decent brand electric fan. And install on stock radiator. This AZ heat is no joke out here.
@@pulpo.r7790 I just wired it up with a single relay but might get another one. I am in Chicago where it’s a little cooler so hopefully it don’t blow out
@@oliverlevy7586 yea. I’m not sure if I got a bad batch of radiator and fan set up, but I was not happy with it. But yes here in Arizona. It’s pretty bad. 115°+ weather out here. I actually have a 16 inch commercial high-speed fan that came out of a red dot mobile AC unit probably going to use that but keep my clutch fan as well. I really just wanted it to have colder AC at idle. So we will see how it works when I install the fan.
I have this system you explained it fine. My question is I have a column ignition, I'm not sure where to run the white wire you said that went to the ignition. Please tell me how to connect the white wire to my column connectors. Thank you.
Finally someone explains it clearly. But I got a question. Can I install the temperature switch in the top radiator's hose ?( with a conector, of course) , I got a 2001 jeep cherokee and I bought a 3 fans radiator. I will appreciate your attention. Thanks, un advance
You can but you’ll get a more accurate reading in the head. It’ll work in the top hose but make just let the engine get a bit hotter before it triggers the fans is all.
i got a question. if i connect the black wire from number 86 directly into the chassis or to the negative terminal of the battery, will the fan kick on without using the temperature switch? i live in a area where 9 months of the year is hot. so i want my fan to kick on since the moment i start my engine. please let me know.
This was so much FUN to learn from you. I never even thought of adding an additional temp switch to the block, but that's awesome to think about. Of course I never thought of it, I'm only 18 lol. SUBSCRIBED! Thank you.
Thank you thank you!! My goodness! I was trying to figure out why the fan ran continuously. Such a bad design smh. I checked my wiring a bunch of times and couldn’t sleep without figuring this out which you did for me. Very much appreciated!!!
I wonder if I hook the signal from my ecu to the signal wire on the relay to control the fans would work for my Ls swap instead of using the temp switch
Thanx For The Help.The Only Question I Have Is I Have A Single Fan Is It Possible To Wire A Switch Into This Set Up So If I Needed I Can Hit The Switch And Turn On the Fan .
Yes. Wire it to ground the relay wire. As long as the keys forward, if you flip the switch it will activate the fan relay just the same as if the temp switch grounded it.
Very informative video saved me from so much loss of time and money. Quick question my coolant temp sensor that is being used to ground the relays out can I splice into those two wires and add my green coolant temp gauge reading wire?
@@BadLuckGarage I understand. I fabricated a piece to go inline on upper radiator hose. Working well so far but still have to run the ignition source wire.
you are 100% correct about not running this on a dual fan setup, i just had my wires melt together thanks to them saying run both my 12" fans off this 1 wire harness they sent and sure enough the wires are not heavy enough to support 2- 80 watt fans it will melt the wires together, did not pop the fuse or the circuit breaker that came with the kit before the wires was on fire.......
I've used these and they work for a few months and then develop a mind of their own. They don't turn on when needed and sometimes turn on without the key on
If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video. Which I’m assuming you didn’t pay attention to or you would have already known that.
@@1979gmcummmins If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video.
@@1979gmcummmins If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video.
Hi! I really appreciate you doing this video in a simple and detailed way. ALLOYWORKS some include a second relay and have a connector coming from both relays to connect directly to tepee dual fans. I’m still working on putting the dual fans and radiator in my 1973 Mustang.
Thank you for taking your time to produce the informative video. I ordered one of these units for my v8 4runner today and plan on adding the additional relay. Would a 185 Degree ON 170(technically 175)Degree OFF work better than the supplied 185 Degree ON 160 Degree OFF?
firsty can you use a toggle swith instead of sensor, one side to ground other to the black wire. secondly can you reverse the blue and black wires on the fan to reverse rotation to blow through the radiator from the front. it seems to work but im worried about long term. its only for my sons standard track car and for burnouts. drifting
Thank you for this I recently purchased this kit and the instruction were contradictory...will install tomorrow. cheers. FYI this is going into my 1964 EH Holden.
Hello, could you run this fan off the OEM connectors and using OEM temperature sensor? I dont want to run lower temp thermostat, as I live in a cold region Thanks for the video!!
Hey another question bro. If I’m using that aftermarket switch this bypassing my electronics going to the stock switch how am I ever gonna know if I’m over heating if the stock wiring harness is what controls the temp gauge ? Can I just tap into that stock switch wiring harness ?
Great video!!!! I'm putting an alloy works radiator in a 94 f150. For the white wire, does any switched ignition source work or which would u recommend me to tap into for the white wire?
Can I run that black wire that goes to coolant switch directly to my harness fan 1 and 2 it should work the same right ? My pcm is programmed to run dual fans . Eliminating that switch should work same way off the temp set by pcm and thermostat right or am I wrong?
Great video I got 1994 Chevy Beretta I just did a 3400 swap.I got everything hooked up..So if run the white wire to the battery does it goes the negative or positive side? The switch ignition source got my confused at the moment..lol Am sorry any info would be Greatly Appreciated
About that sensor. I dont have a spot to put it on my 5.3 02 Silverado and I dont really have the tools to tap a spot in the cylinder head. So my question is can I get a coolant sensor bung and install it on the upper coolant hose mid way, or does it have to go in the cylinder head. Thank you in advance Sir I do appreciate your tutorials
Could the system not run without the switched power? Have a basic circuit from the battery but have the temp switch as a breaker so that the fan stays on even when the car is off in case it's still hot?
Thank you so much for the video I my self knowing what I know just grounded that loop to the frame. I understand now that's wrong. QUESTION: My sensor has 2 prongs, not just the one.. DO I HOOK IT UP THE SAME WAY? Leaving 1 prong/tab empty? I'd it for 2 fans? PLEASE HELP ME OUT. Z THANK YOU. I had to get a shallow sensor because of where I put it on the side of my block, the long sensor bottomed out. thanks
On my 86 c10, I did add a 2nd relay. Installed a 160 thermostat as well. Fans do kick on once temp rises. But fans don't seem to kick off once temp drops. Any suggestions. Noticed it did this with the single relay as well. Thanks in advance
If you’re using the supplied temp switch, and wired it properly, the fans won’t kick off unless the coolant temp drops below 165* or until you turn the key off. Unless you’ve got a VERY efficient coolant system , that’ll never happen. I explained that in the video.
@@BadLuckGarage yes , I'm using the temp sensor supplied with the kit and installed a 160 thermostat. I did install a second relay as recommended. The key power source I'm using for the white wire to relay is pushing 14v per my tester. Could this be over powering the relay?
@@markmelendez1029 No. automotive relays will operate at well over 14volts. It’s more likely that you coolant temp just isn’t getting low enough for the switch to shit the fans back off. Just because you install a 160* thermostat doesn’t mean your engine is actually going to run at 160*. It just means that’s the lowest temp that it could possibly maintain. As I explained in the video, that’s my biggest problem with this kit is that the switches on-off temp is set too low to operate properly with most cooling systems.
Sounds like you need to rewatch the video and pay better attention. Because if you hook it up the way the video recommends then you wouldn’t have a any of these problems.
I have the Alloyworks Radiator and Dual Fan Assembly on my 98 Chevy K1500 5.7 Vortec, I'm running a dual relay setup, one for each fan with a single coolant sensor in the passenger side cylinder head to ground at 203° with the factory 195° thermostat, but I want one of the fans to run with the AC on. Could you do a video on how to wiring up this type of kit to work with the AC system?
Wish I would’ve seen this before I started. That lil loop on the black wire is pointless. I plan on running 2 relays. Is there a way to test my temp sensor? I held a lighter to it. Just to chec it before I put it in the intake , it never grounded out.
You can. Just keep in mind temps in the radiator won’t reflect actual temps in the engine when selecting your in and off temps. So you may have to do some guessing and some settling on “good enough”.
I have the exact same relay and color of wires the only thing is that I have a pigtail on my fan that has a blue and a black wire connected to it. In your video you only have a blue wire coming from the fan, do you know why mine has blue and black and how I should wire those? Thanks.
Having issues with my fans constantly running even with the coolant cold. Switch is installed into lower intake on a 1990 mustang. Any ideas? Is the switch stuck closed?
If you have it wired correctly and the coolant touching the switch is colder than the shutoff switch is colder than it’s shutoff point but the fans keep running, then the switch is probably bad.
I have been watching your video.If you can help me with this. I am running terminator x wich has two outputs for fan control..im running 2 relays..So should i run the output off the terminator to the black wire?And what to do with the white wire?Thanks for your help.
Yes. And white wire still gets hooked to switched power as shon in the video. The Holley will ground out the black wire to activate the relays. Or you can use up two outputs and have the fans come on at different temps, or you could wire one relay to the temp switch and just have the Holley trigger the second fan if needed. There are literally dozens of ways you could do this. The purpose of this video is to show the most simplistic way.
I'm using a relay setup from a prior radiator and fan set up, running on a 5.3 swap, the fans cutoff after hitting 195, they turn on when they are supposed to but turn off when they aren't supposed to. Is this an ECU problem or relay problem? TIA
If you’re using one of the setups container in this video then your ecu has nothing to do with when your fans come on or go off. If you’re not using one of these setups then you’re asking questions on the wrong video.
@BadLuckGarage Thanks for the reply, I watched this video trying to figure out why they kept cutting off. Do you have a video on the ls swap version of this? Cause I can't find anything with my issue.
My fans are working perfect , only problem I have my car gets really hot and shuts off dnd then fans turn on , my question is what temperature sensor should I use
You talked about the dual fan setup. Could we not tie the red battery wires together from both relays? Also for a 12V 80w dual fan, would a 10amp fuse be sufficient? Great video btw!!
Yes you can tie them together as long as you use the proper gauge wire for the amp load. What size fuse you need depends on the amp draw of the fans you’re using. But generally you’ll need at least a 20 amp fuse minimum for a single cooling fan. Check the specks on your fan to know for sure how many amps they use.
@@LReese-de4wt Then if you’re wanting to power both relays/fans off the same power wire, I would go with a 10awg wire with a 30amp fuse. 👍 And I’m glad to hear you found the video helpful. Good luck to you!
Thank you for this! This helped explain the harness well. Maybe someone here can help me, if i want want to use the coolant switch and just want to run them to a switch, what wire would i use to switch?
I’ve got a LS set up with dual fan,psi wiring harness, an their dual fan relay set up I have everything hooked up right the fans seem to come on when they supposed to but they want cut off, it will cool my radiator down we’re I can put my hand on it, not hot, but the fans want cut on, any suggestions
I have my condenser pressure switch in pin 86 so that my ac fan turns on when it reaches a certain pressure (with AC on only). Could I splice my coolant switch wire with the pressure switch wire to pin 86 so that it activates through coolant temp as well (with AC off)?
It seems that my fans kick on when engine gets hot but they don’t turn off until I turn off ignition. My thermostat is 180 and the switch is 190. At some point while driving it should cool down enough for them to turn off right? My gauge shows around 150 and they still run, the switch is installed in the top of the manifold. Olds 403.
Question, I have an alloyworks radiator and fan shroud and the fuse coming off the red power wire keeps blowing when my car gets hot. Checked all the grounds, they are good. Went from 20 amp to 30 amp and still blowing. Idk what is going on
Thanks, have a question I put the white wire to the ignition and my fan stays on after I have trun of the engine and the engine is hot not overheating. What can it be
@@Oscar-lo4fh ignition hot can be any wire that have power when you turn the key to on position and when you turn it off cut the power. You probably have connected to a hot wire what means that wire always have power because its not related to the ignition switch system .
for and oem "upgrade" application, instead of having the "switched ignition" wire, can that run to the factory fan wire to have the ecu control when the fan turns on and off ?
Yes as long as it’s running through a relay. That’s exactly how I ran mine. I already had my Holley ecu triggering the factory fan relay. After determining the factory relay could handle the amp lid of both fans I just left it the way I already had it but split the relay power to both fans.
Hello. If you're still responding to comments. I have a question. I purchased a 4 core radiator for a 2000 honda civic sedan. With a b series engine. My rad is a eday buy. I just learned it's has the same 180 set up. Mines is 195. What I asking you. Why when I run the honda temp sensor. The coolet get real hot in the rad. Before the engine get hot. Why. I've noticed to. The sensor will Eventually turn on. But like you said. The relay won't turn off. Please help. If I change the thermostat to a 180. Does that have anything to do with the ecu. Going from a 195 to a 180. Or the ecu. As nothing to do with the temperature of the car.
I'm hooking it up to a toggle switch the white wire so I put the white wire in the toggle switch and then when I hook up another wire to the other side of the toggle switch where does that go does that go to the fan or that goes to the blue wire
You would hook it exactly where I told you to hook it in the video. The switch you want to install inline is just an interrupt to the circuit. Why would it charge anything about where the wire still has to go?
@@BadLuckGarage I'm hooking it up to a on and off switch much Suzuki samurai has a push button to start so I want to leave my fans on all the time so that's why I'm putting it on and off switch
@@BadLuckGarage I'm not installing that gold switch that you have in the picture in your hand the only thing I want to do is hook it to a on and off source on it off switch toggle switch so that ground wire arms is in the hook to the chassis
You said the switch ignition source the white wire goes in so where will I hook up the toggle switch to turn it on and off I don't have a key to start my car I have a push button to start it
If you truly hooked them up the way I did, then you most likely have a faulty temp switch that staying grounded out. That is the only thing that would cause your issue if the engine isn’t over 165 degrees already.
I have this same kit except mine came with a 30 amp circuit breaker? Which I would assume should go between the relay and battery but there is that inline fuse there already 🤔 so my diagram says to put it between my switched ignition and relay but so many other diagrams have it going to battery, even the breaker says BAT on one side so little confusing. Any thoughts?
Breakers will always go on the battery side. At least that’s where I’ve always used them. My Allow Works kit didn’t come with a breaker so maybe it’s a recent update. 🤷🏼♂️
When doing this same install, could I tie the load end of these relays in with the existing "hot" (positive) wires already going to my cooling fans, so that they still come on with my a/c? My fans DO NOT come on when at or above operating temp, they only come on when the a/c on. Which is why I'm doing this install, but I still need to tie into to my a/c system somehow.
Most ac locks are ground triggers, not 12v triggers. Depending on how your AC kick is originally wired you may need to tie into the ground side, not the switched ignition side. You definitely don’t want to tie into the load (battery) terminal of the relay though.
I have an coolant switch inside my block ? How would I put that one in ? If I take the wires off the coolant switch I have now , i won’t know how warm my car is Thur my dash board
If I’m running a 180 degree thermostat in my sbc 350, could I just not use the supplied temp switch and just buy a 195 degree ON and 185 degree OFF switch?
Sensor…..no, switch….possibly. Just depends on your specific application. You would need to find a wire diagram for your specific vehicle and understand how your factory fan circuit works to k ow for sure.
My Dads chevelle developed a non working fan issue when up grading from a 14" fan to a 16" fan.. fan will kick on for few seconds then stop and twitch ..replaced relay n shortstop circuit breaker.. now nothing happens... I noticed 85 and 86 are switched around when compared to the way you laid it out .. would that cause this issue even though it was fine before?
No. 85 and 86 are generally reversible. I would make sure the new fan itself has a good solid ground. It’s possible that the new fan draws a lot more amps and maybe the ground was making due before but any conduct enough juice now and is causing the fan motor to overheat. Or the fan itself could just be bad if the old one worked fine and the ground is good.
@@BadLuckGarage thanks for fast response BLG, yeah that's what I was thinking .. multimeter with probes on 85 n 86 show 12v with key on... I got 12.36v at 30 n 87.. I can manually close the relay and the fan runs great no stalling, I'll clean up grounds n try it again Thanks for the help and Thank you for your time ..... the fan issue amongst other problems started when my dad got vintage air install... $5,000 for sub par a/c and constant headache along with heartache. install looks like hell...to say the least.
Thank you for a video that was straight to the point, and I didn't have to go to electronics class. Did this install (after watching your video) in 45 mins. Thanks again.
on the ignition source (85) what amp fuse (in the fuse box) would you suggest for two separate relays wired together? And could I use a power distribution block?
Very cool, i just ran a 30 Amp fused wire to power wire on fan from battery and 210-195 coolant switch, with a 195 engine thermostat to ground on the fan. On my 5.0 Ford Ranger.
Did you have any issues with the fans turning on? I changed the temp switch to that temp as well and the fans won’t turn on for me
@Jmaddox_14 check live data, watch the temperature rise on the screen, if it gets to 210 and no fans then replace switch or check wiring, ensure the fan actually works when it gets 12 volts. Iv got a bad fan out of the box before.
You may need a relay or two overtime, if down the road it starts blowing fuses
Thank God! I thought I was confused but it turns out the wire was wrong. I kept going through my head thinking ''if I hard ground the black, what the hell is the switch for, and if so are they expecting me to wire the hot side to a one wire thermal switch?'' I knew neither would work and figured id take a UA-cam break lol.
Quick question you mentioned a one terminal switch. My sensor has 2 terminals. Would I hook it up the same way? And just leave one terminal empty. Or is the other terminal for a 2nd fan? THANK YOU IN ADVANCED.
Thank God I watched all the way Until where you mentioned The DUAL FAN no no... I'm running DUAL Fans. Thsnk you
Thanks for takin the time to make this video. After endless videos and forums of over complicating the process, yours made perfect sense and understandable.
Glad to hear the video helped you out! Be sure to share it if you think it may help others!👍
Good explanation, wonder why alloy works couldn’t just print that on set of instructions and put it in the box??? Anyway, good job on the video. If you can’t follow those instructions you just gave there’s something wrong lol.
That would’ve made to much sense for AW to do, I just ordered the 03 suburban aluminum duel fan setup from AW for $321.46 and no information on wiring up and going from clutch fan to electric fan setup and little info on videos most are jokes or clickbait, I kinda figured AWG was to small for two fans just like with HID HO kits these companies need to and option for heavy duty relay wiring kits make life easier
Thank you for taking the time and doing a very informative video. My local shop wanted to charge me 350 to do this and I did it myself in 45mins after watching your video. Thanks Bro
Glad it helped
What if your in Florida and the thermostat was removed? Will the switch still work?
@@coachfaye6467 ua-cam.com/video/AtE70ln_IBw/v-deo.html
45 mins? Damn! Okay. Deal.
Thank you. I ran dual relay but how do I get the High Speed Fan for AC ? Right now I just manage the fan with a switch & I just let the low speed fan to ru every time I turn on my engine
Great video! I have looked for 4 days for all of this information! Thank you a thousand times!
Glad you found it helpful brother.
Thanks for explaining the problem with the black ground wire. Why the manufacturer put that extra grounding loop is bizarre. Unless you want the fan running all the time. I disconnected it and now the fan comes on at the right temperature.
Thanks again. Great explanation.
Dam where has this video been. Missinhmg for years. Youve explained the best how to wire electric fans
Honestly I have not hooked up one of these kits in over 10 years and this channel is only four years old next month lol. I switched to fuel injection an LS engines 10 years ago so I’ve always used the computer to run my fans.
Just purchased the aluminum radiator with dual fans from alloy works. Did not like the relay kit that came with it. So I went ahead and bought the PAINLESS brand relay kit. Part# 30116. Dual fan/ dual activation fan relay kit for A/c function. Will be installing all of it this Saturday. Hope everything goes smooth. Thanks for the explanation.
How’s it working out
@@oliverlevy7586 man. I completely removed radiator and fans and went back to stock. The fans gave out in the middle of rush hour traffic. Both burned up. Luckily AlloyWorks refunded me the full amount with no return necessary. Which was a plus. Was really unhappy. Oh and also the first radiator setup started leaking. Sent me a new one under warranty then the fans gave out after that. So I left the PAINLESS HARNESS but went back to stock radiator and clutch fan until further notice. Probably going to make a custom shroud and get a nice decent brand electric fan. And install on stock radiator. This AZ heat is no joke out here.
@@pulpo.r7790 I just wired it up with a single relay but might get another one. I am in Chicago where it’s a little cooler so hopefully it don’t blow out
@@oliverlevy7586 yea. I’m not sure if I got a bad batch of radiator and fan set up, but I was not happy with it. But yes here in Arizona. It’s pretty bad. 115°+ weather out here. I actually have a 16 inch commercial high-speed fan that came out of a red dot mobile AC unit probably going to use that but keep my clutch fan as well. I really just wanted it to have colder AC at idle. So we will see how it works when I install the fan.
I have this system you explained it fine. My question is I have a column ignition, I'm not sure where to run the white wire you said that went to the ignition. Please tell me how to connect the white wire to my column connectors. Thank you.
You don’t have to connect it to your column, just to an ignition hot. Meaning a wire that is 12v hot when your key is forward.
Apreciate your time invested this is better then college and much cheaper LOL
Lol🤣
Finally someone explains it clearly. But I got a question. Can I install the temperature switch in the top radiator's hose ?( with a conector, of course) , I got a 2001 jeep cherokee and I bought a 3 fans radiator. I will appreciate your attention. Thanks, un advance
You can but you’ll get a more accurate reading in the head. It’ll work in the top hose but make just let the engine get a bit hotter before it triggers the fans is all.
i got a question. if i connect the black wire from number 86 directly into the chassis or to the negative terminal of the battery, will the fan kick on without using the temperature switch? i live in a area where 9 months of the year is hot. so i want my fan to kick on since the moment i start my engine. please let me know.
Got this same set on Temu , it’s awesome thanks for taking the time to make the video because there’s no instructions
This was so much FUN to learn from you. I never even thought of adding an additional temp switch to the block, but that's awesome to think about. Of course I never thought of it, I'm only 18 lol. SUBSCRIBED! Thank you.
Thank you thank you!! My goodness! I was trying to figure out why the fan ran continuously. Such a bad design smh. I checked my wiring a bunch of times and couldn’t sleep without figuring this out which you did for me. Very much appreciated!!!
So this worked for you man?
WHAT IF/ you have a 195 degree thermostat ? what temperature switch would you use?
Gettin’ it done thanks to your simple yet thorough explanation! Thanks again!
Glad to hear it brother!
I wonder if I hook the signal from my ecu to the signal wire on the relay to control the fans would work for my Ls swap instead of using the temp switch
Thanx For The Help.The Only Question I Have Is I Have A Single Fan Is It Possible To Wire A Switch Into This Set Up So If I Needed I Can Hit The Switch And Turn On the Fan .
Yes. Wire it to ground the relay wire. As long as the keys forward, if you flip the switch it will activate the fan relay just the same as if the temp switch grounded it.
Very informative video saved me from so much loss of time and money. Quick question my coolant temp sensor that is being used to ground the relays out can I splice into those two wires and add my green coolant temp gauge reading wire?
Thanks for the information. Do you have a recommendation for location of the temperature switch on a 86 Toyota pickup with a 22RE ?
Nope
@@BadLuckGarage I understand. I fabricated a piece to go inline on upper radiator hose. Working well so far but still have to run the ignition source wire.
you are 100% correct about not running this on a dual fan setup, i just had my wires melt together thanks to them saying run both my 12" fans off this 1 wire harness they sent and sure enough the wires are not heavy enough to support 2- 80 watt fans it will melt the wires together, did not pop the fuse or the circuit breaker that came with the kit before the wires was on fire.......
I've used these and they work for a few months and then develop a mind of their own. They don't turn on when needed and sometimes turn on without the key on
If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video. Which I’m assuming you didn’t pay attention to or you would have already known that.
@@BadLuckGarage they were wired exactly like the diagram provided
@@1979gmcummmins If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video.
@@BadLuckGarage like I said. They were wired exactly to the color codes provided!
@@1979gmcummmins If the relay is wired properly, it’s impossible for the fan to turn on without the key. Even if the thermostat switch itself shorts to ground, there would be no power going across the relay without the key on unless you wired pin 85 or 86 straight to battery power, and that’s exactly why I told you NOT to wire it that way in this video.
Quick question can you run the temperature switch off one of the radiator hoses if so how can that be done?
Hi! I really appreciate you doing this video in a simple and detailed way. ALLOYWORKS some include a second relay and have a connector coming from both relays to connect directly to tepee dual fans. I’m still working on putting the dual fans and radiator in my 1973 Mustang.
@@FredMcFaddin Sounds like they finally took my advice then.
Do you have a video on how to hook up to the a/c compressor?
Thank you for taking your time to produce the informative video. I ordered one of these units for my v8 4runner today and plan on adding the additional relay. Would a 185 Degree ON 170(technically 175)Degree OFF work better than the supplied 185 Degree ON 160 Degree OFF?
firsty can you use a toggle swith instead of sensor, one side to ground other to the black wire. secondly can you reverse the blue and black wires on the fan to reverse rotation to blow through the radiator from the front. it seems to work but im worried about long term. its only for my sons standard track car and for burnouts. drifting
Thank you for this I recently purchased this kit and the instruction were contradictory...will install tomorrow. cheers. FYI this is going into my 1964 EH Holden.
Hello,
could you run this fan off the OEM connectors and using OEM temperature sensor?
I dont want to run lower temp thermostat, as I live in a cold region
Thanks for the video!!
If you’re running your fans off your factory wiring then the wiring kit and instructions in this video doesn’t pertain to your application.
Hey another question bro. If I’m using that aftermarket switch this bypassing my electronics going to the stock switch how am I ever gonna know if I’m over heating if the stock wiring harness is what controls the temp gauge ? Can I just tap into that stock switch wiring harness ?
So where do I put the black wires that are connected to the fan? Do I just ground them out somewhere?
Answered in the video
Hey ? Do i have to nstall the t.switch ? Or could i use the old 1
Great video!!!! I'm putting an alloy works radiator in a 94 f150. For the white wire, does any switched ignition source work or which would u recommend me to tap into for the white wire?
I have a quick question . What if I used a 5 pin relay ? Do I just not use the middle pin ? Is it okay to depin it ?
Correct
Nice straight up video thanks, now a/c fan turn on is next set up or can they be built together?
Can I run that black wire that goes to coolant switch directly to my harness fan 1 and 2 it should work the same right ? My pcm is programmed to run dual fans . Eliminating that switch should work same way off the temp set by pcm and thermostat right or am I wrong?
As long as your pcm works by grounding the signal wire yes. That’s actually the way I ran mine as I mentioned in the video.
@@BadLuckGarage thanks for the reply I just discovered your channel you been very helpful thanks man
@@MrJonathan6986 Glad to hear it brother!👍
How would you hook up a toggle for power source instead of temp sensor?
Great video I got 1994 Chevy Beretta I just did a 3400 swap.I got everything hooked up..So if run the white wire to the battery does it goes the negative or positive side? The switch ignition source got my confused at the moment..lol Am sorry any info would be Greatly Appreciated
About that sensor. I dont have a spot to put it on my 5.3 02 Silverado and I dont really have the tools to tap a spot in the cylinder head. So my question is can I get a coolant sensor bung and install it on the upper coolant hose mid way, or does it have to go in the cylinder head. Thank you in advance Sir I do appreciate your tutorials
Question do I need to install the circuit breaker that come with it
Yes
Does this switched ign. source for pin 85 work as an A/C override for when your compressor is on?
I'm running a electric fan to a relay to the fuse box and every now and then the fuse will blow in the fuse box any help?Thanks
Could the system not run without the switched power? Have a basic circuit from the battery but have the temp switch as a breaker so that the fan stays on even when the car is off in case it's still hot?
Thanks for watching. Glad this video helped you out.
Thank you so much for the video I my self knowing what I know just grounded that loop to the frame. I understand now that's wrong.
QUESTION: My sensor has 2 prongs, not just the one.. DO I HOOK IT UP THE SAME WAY? Leaving 1 prong/tab empty? I'd it for 2 fans? PLEASE HELP ME OUT. Z THANK YOU.
I had to get a shallow sensor because of where I put it on the side of my block, the long sensor bottomed out.
thanks
On my 86 c10, I did add a 2nd relay. Installed a 160 thermostat as well. Fans do kick on once temp rises. But fans don't seem to kick off once temp drops. Any suggestions. Noticed it did this with the single relay as well. Thanks in advance
If you’re using the supplied temp switch, and wired it properly, the fans won’t kick off unless the coolant temp drops below 165* or until you turn the key off. Unless you’ve got a VERY efficient coolant system , that’ll never happen. I explained that in the video.
@@BadLuckGarage yes , I'm using the temp sensor supplied with the kit and installed a 160 thermostat. I did install a second relay as recommended. The key power source I'm using for the white wire to relay is pushing 14v per my tester. Could this be over powering the relay?
@@markmelendez1029 No. automotive relays will operate at well over 14volts. It’s more likely that you coolant temp just isn’t getting low enough for the switch to shit the fans back off. Just because you install a 160* thermostat doesn’t mean your engine is actually going to run at 160*. It just means that’s the lowest temp that it could possibly maintain. As I explained in the video, that’s my biggest problem with this kit is that the switches on-off temp is set too low to operate properly with most cooling systems.
@BadLuckGarage what range temperature switch should we use to remedy this issue ?
Have a question when I turn terminal 85 or the white wire from the ignition surge off the fan turn off what I need to chenge
Sounds like you need to rewatch the video and pay better attention. Because if you hook it up the way the video recommends then you wouldn’t have a any of these problems.
This was a much needed video! I was having the same issue with that random ground dab. Thanks!
Glad I could help!
I have the Alloyworks Radiator and Dual Fan Assembly on my 98 Chevy K1500 5.7 Vortec, I'm running a dual relay setup, one for each fan with a single coolant sensor in the passenger side cylinder head to ground at 203° with the factory 195° thermostat, but I want one of the fans to run with the AC on. Could you do a video on how to wiring up this type of kit to work with the AC system?
Can I use black wire on my temp sensor I already have. Comes w yellow and black wires on it already?
Depends on what the black wire you already have does. I suggest using google to find a wiring schematic for your vehicle.
Can I run the switch ignition wire to the black wire if idk how to find or run the wire to the switch ignition ?
What?
Wish I would’ve seen this before I started. That lil loop on the black wire is pointless.
I plan on running 2 relays.
Is there a way to test my temp sensor? I held a lighter to it. Just to chec it before I put it in the intake , it never grounded out.
Wouldn't the purpose of that "eye loop" be too ground out terminal 86 as a roadside repair if the switch isn't kicking the fans on?
Hey boss, can u connect that temperature switch to the radiator?
You can. Just keep in mind temps in the radiator won’t reflect actual temps in the engine when selecting your in and off temps. So you may have to do some guessing and some settling on “good enough”.
I have the exact same relay and color of wires the only thing is that I have a pigtail on my fan that has a blue and a black wire connected to it. In your video you only have a blue wire coming from the fan, do you know why mine has blue and black and how I should wire those? Thanks.
Would you recommend this kit i looked it up on Amazon but no reviews is it any good?
Can I unplug the original coolant senort and use that port to install sensor provided and connect to the black wire?
Thanks
Top quality video, even a tech will double check every step before cracking on.
Doing this job on my bmw today haha.
I am trying to wire this into a 99 cherokee xj. Mine comes with 3 fans so i should run relays for all 3 and where should i put my thermostat?
You should put it in one of the locations I recommended in the video. How many relays you need depends on the amp draw of your fans.
Im running a terminator xmax. Just wondering do i need to use the temp sensor with the alloy works or use the output with the holley?
Use whichever you want
Having issues with my fans constantly running even with the coolant cold. Switch is installed into lower intake on a 1990 mustang. Any ideas? Is the switch stuck closed?
If you have it wired correctly and the coolant touching the switch is colder than the shutoff switch is colder than it’s shutoff point but the fans keep running, then the switch is probably bad.
I have been watching your video.If you can help me with this. I am running terminator x wich has two outputs for fan control..im running 2 relays..So should i run the output off the terminator to the black wire?And what to do with the white wire?Thanks for your help.
Yes. And white wire still gets hooked to switched power as shon in the video. The Holley will ground out the black wire to activate the relays. Or you can use up two outputs and have the fans come on at different temps, or you could wire one relay to the temp switch and just have the Holley trigger the second fan if needed. There are literally dozens of ways you could do this. The purpose of this video is to show the most simplistic way.
I'm using a relay setup from a prior radiator and fan set up, running on a 5.3 swap, the fans cutoff after hitting 195, they turn on when they are supposed to but turn off when they aren't supposed to. Is this an ECU problem or relay problem? TIA
If you’re using one of the setups container in this video then your ecu has nothing to do with when your fans come on or go off. If you’re not using one of these setups then you’re asking questions on the wrong video.
@BadLuckGarage Thanks for the reply, I watched this video trying to figure out why they kept cutting off. Do you have a video on the ls swap version of this? Cause I can't find anything with my issue.
My fans are working perfect , only problem I have my car gets really hot and shuts off dnd then fans turn on , my question is what temperature sensor should I use
You talked about the dual fan setup. Could we not tie the red battery wires together from both relays?
Also for a 12V 80w dual fan, would a 10amp fuse be sufficient?
Great video btw!!
Yes you can tie them together as long as you use the proper gauge wire for the amp load. What size fuse you need depends on the amp draw of the fans you’re using. But generally you’ll need at least a 20 amp fuse minimum for a single cooling fan. Check the specks on your fan to know for sure how many amps they use.
12.7amps for each fan. Thanks a bunch. Most informational video I've found on wiring fans the correct way!
@@LReese-de4wt Then if you’re wanting to power both relays/fans off the same power wire, I would go with a 10awg wire with a 30amp fuse. 👍 And I’m glad to hear you found the video helpful. Good luck to you!
Pretty well explained it simple enough for just about anyone to understand 👍🏻
Yea we'll see, lol
Thank you for this! This helped explain the harness well.
Maybe someone here can help me, if i want want to use the coolant switch and just want to run them to a switch, what wire would i use to switch?
Will my temperature gauge still work or what will I have to do?
I have alloy works dual fan and dual relays
Why wouldn’t it?
I’ve got a LS set up with dual fan,psi wiring harness, an their dual fan relay set up I have everything hooked up right the fans seem to come on when they supposed to but they want cut off, it will cool my radiator down we’re I can put my hand on it, not hot, but the fans want cut on, any suggestions
I have my condenser pressure switch in pin 86 so that my ac fan turns on when it reaches a certain pressure (with AC on only). Could I splice my coolant switch wire with the pressure switch wire to pin 86 so that it activates through coolant temp as well (with AC off)?
It seems that my fans kick on when engine gets hot but they don’t turn off until I turn off ignition. My thermostat is 180 and the switch is 190. At some point while driving it should cool down enough for them to turn off right? My gauge shows around 150 and they still run, the switch is installed in the top of the manifold. Olds 403.
At about 65mph.
Do u recommend a spot to put the coolant switch on a 2003 cummins
Unfortunately I don’t know jack diddly about dodge engines brother.
Question, I have an alloyworks radiator and fan shroud and the fuse coming off the red power wire keeps blowing when my car gets hot. Checked all the grounds, they are good. Went from 20 amp to 30 amp and still blowing. Idk what is going on
so if i wire them both to turn on at the same time , does that mean it pulls 120amps at start up ?
I have absolutely no idea where you’re getting that number from.
Thanks, have a question I put the white wire to the ignition and my fan stays on after I have trun of the engine and the engine is hot not overheating. What can it be
Sounds like you have it wired to a constant hot, not an ignition hot. Otherwise the relay trigger wouldn’t have power with the key off.
Or does it need to be connect to a circuit breaker then to the ignition?
@@BadLuckGarage what would be a ignition hot?
@@Oscar-lo4fh ignition hot can be any wire that have power when you turn the key to on position and when you turn it off cut the power. You probably have connected to a hot wire what means that wire always have power because its not related to the ignition switch system .
for and oem "upgrade" application, instead of having the "switched ignition" wire, can that run to the factory fan wire to have the ecu control when the fan turns on and off ?
Yes as long as it’s running through a relay. That’s exactly how I ran mine. I already had my Holley ecu triggering the factory fan relay. After determining the factory relay could handle the amp lid of both fans I just left it the way I already had it but split the relay power to both fans.
Hello. If you're still responding to comments. I have a question. I purchased a 4 core radiator for a 2000 honda civic sedan. With a b series engine. My rad is a eday buy. I just learned it's has the same 180 set up. Mines is 195. What I asking you. Why when I run the honda temp sensor. The coolet get real hot in the rad. Before the engine get hot. Why. I've noticed to. The sensor will Eventually turn on. But like you said.
The relay won't turn off. Please help. If I change the thermostat to a 180. Does that have anything to do with the ecu. Going from a 195 to a 180. Or the ecu. As nothing to do with the temperature of the car.
How would it work if not using a thermostat in water pump just direct flow would it work the same? Or would fans not turn on
Yep. Although I don’t recommend not running a thermostat unless it’s for some special application. And even then I would at least run a restrictor
thanks for the video. how can I run the fans using the ECM do you have another video?
If your ecu has a trigger wire for electric fans then it would be used to trigger the relay in place of the thermostat switch.
I'm hooking it up to a toggle switch the white wire so I put the white wire in the toggle switch and then when I hook up another wire to the other side of the toggle switch where does that go does that go to the fan or that goes to the blue wire
You would hook it exactly where I told you to hook it in the video. The switch you want to install inline is just an interrupt to the circuit. Why would it charge anything about where the wire still has to go?
@@BadLuckGarage I'm hooking it up to a on and off switch much Suzuki samurai has a push button to start so I want to leave my fans on all the time so that's why I'm putting it on and off switch
@@BadLuckGarage I'm not installing that gold switch that you have in the picture in your hand the only thing I want to do is hook it to a on and off source on it off switch toggle switch so that ground wire arms is in the hook to the chassis
@@mudlifejunkiepr3937 Like i said, covered in the video. 5:10
You said the switch ignition source the white wire goes in so where will I hook up the toggle switch to turn it on and off I don't have a key to start my car I have a push button to start it
i hooked mine up just like you did but my fan stays on all the time as soon as i turn the key on any suggestions
If you truly hooked them up the way I did, then you most likely have a faulty temp switch that staying grounded out. That is the only thing that would cause your issue if the engine isn’t over 165 degrees already.
So we don't wanna ground the black loop. And my 2002 Sonoma V6 where do I put the white wire too
Thanks that friggin loop I grounded was totally stumping me . Thank so much !
Glad I could help!
I have this same kit except mine came with a 30 amp circuit breaker? Which I would assume should go between the relay and battery but there is that inline fuse there already 🤔 so my diagram says to put it between my switched ignition and relay but so many other diagrams have it going to battery, even the breaker says BAT on one side so little confusing. Any thoughts?
Breakers will always go on the battery side. At least that’s where I’ve always used them. My Allow Works kit didn’t come with a breaker so maybe it’s a recent update. 🤷🏼♂️
So can I put in an override toggle switch spliced into the temp sensor wire with a ground?
Absolutely!
i did everything right on my truck just that i’m running a temp sensor from 180 on to 165 off should i change the sensor to 195 on to 175 off ?.
Thank you for the explanation of how to wire a fan relay I am going to try on my mustang tomorrow
When doing this same install, could I tie the load end of these relays in with the existing "hot" (positive) wires already going to my cooling fans, so that they still come on with my a/c?
My fans DO NOT come on when at or above operating temp, they only come on when the a/c on. Which is why I'm doing this install, but I still need to tie into to my a/c system somehow.
Most ac locks are ground triggers, not 12v triggers. Depending on how your AC kick is originally wired you may need to tie into the ground side, not the switched ignition side. You definitely don’t want to tie into the load (battery) terminal of the relay though.
I have an coolant switch inside my block ? How would I put that one in ? If I take the wires off the coolant switch I have now , i won’t know how warm my car is Thur my dash board
or did you use the islet to hook up another wire and put it inside the car to a toggle switch to have a manual override for the ground for the fan.
The eyelet itself is useless except to ground, but yes you could run a wire to ground through a switch for manual fan control.
If I’m running a 180 degree thermostat in my sbc 350, could I just not use the supplied temp switch and just buy a 195 degree ON and 185 degree OFF switch?
Yes
Could i connect the black wire to the temp sensor already in my ls motor???
no
Thanks brother you nailed it love the instructions
How you run 85 to a switched ignition
Exactly as explained
can you splice the black wire into your existing coolant temp. sensor
Sensor…..no, switch….possibly. Just depends on your specific application. You would need to find a wire diagram for your specific vehicle and understand how your factory fan circuit works to k ow for sure.
My Dads chevelle developed a non working fan issue when up grading from a 14" fan to a 16" fan.. fan will kick on for few seconds then stop and twitch ..replaced relay n shortstop circuit breaker.. now nothing happens... I noticed 85 and 86 are switched around when compared to the way you laid it out .. would that cause this issue even though it was fine before?
No. 85 and 86 are generally reversible. I would make sure the new fan itself has a good solid ground. It’s possible that the new fan draws a lot more amps and maybe the ground was making due before but any conduct enough juice now and is causing the fan motor to overheat. Or the fan itself could just be bad if the old one worked fine and the ground is good.
@@BadLuckGarage thanks for fast response BLG, yeah that's what I was thinking .. multimeter with probes on 85 n 86 show 12v with key on... I got 12.36v at 30 n 87.. I can manually close the relay and the fan runs great no stalling, I'll clean up grounds n try it again Thanks for the help and Thank you for your time ..... the fan issue amongst other problems started when my dad got vintage air install... $5,000 for sub par a/c and constant headache along with heartache. install looks like hell...to say the least.
what a dual fan can i run 30 amp relay for a ford edge with 14-16guage or put a bigger relay like 70 ?