Thanks! Using this video and some wiring schematics I was able to replace a $271.90 part (32900-05210) (7 wire) with a $7.49 part (5 wire) and get my brother's Suzuki 125SP running again - after being dormant for about 30 years.
The original CDI would fire at low RPM (kick starting), but not higher RPMs (idle), so the bike would fire but never run for more than a few revolutions. We worked with the carburetor for way too long before we decided that it might not be getting spark at more than kick starting RPMs.
In addition to giving a very good lecture on cdi boxes, you also gave a perfect lecture on how to make a good video: Loud, clear and well explained. Great job.
A great explanation of how the cdi works. After two or three weeks of searching, you gave me a plain and simple way to check my ignition system. Flustered and P Oed' I had almost given up on what or how to proceed. Thanks bunches for a great video. I now have a new trail to follow.
You have that ignate soul of a teacher,Nowadays i can proudly say i know all this by heart.I am a telecommunication technician and understand how these things work very well.I wish i had seen this video 3 or four years ago when the so called mechanics of Miami got me so frustrated that i decided to learn by myself,i feel i live in the outback,what a disaster..I have been through hell and back learning everything about scooters and motorcycles..I have had 28 motorcycles and scooters combined.I am 52..and nowadays when i watch videos of mechanics i can tell right away who is a part changer ,like the ones i ran away from and a real mechanic that makes perfect sense like you..I give you credit,the highest credit for your true knowledge and will to share it with others..You do not need advertizing because you do know what you are doing and saying,and i am very proud of you..Even though this is something i know very well i want to thank you for your time and dedication..If i had met a mechanic like you,i would not know what i know today..Nowadays i love this,but when you depend on yourself to fix your vehicles without knowing these things , like it happened to me.it gets really frustrating,now at the end of the road i feel i have won a battle..I see more than a few thumb downs on this video,and these are probably dudes who are jealous of your high IQ..Disregard these pigs that only think about eating their next meal..These are the dudes who unethically oppose people like you and me ,because we earn our living honestly with transparency and honesty..When you are good,and you are excellent,you can be showing it all,and yet you will become even a stronger magnet to attract great customers to your business,versus the shady dudes whose mechanical practices suck..i do not do this for a living and i have parts and tools most shops here in Miami do not have and thats embarrassing.For years i heard things from shop owners here that are too frustrating to mention publicly..One thing i do wanna say is, many mechanics would tell me that it would be better to buy a new engine than to fix anything in the gear box.I was not sure about that and one day i bought a 12 ton shop press and people laughed at me.Today after 12000 miles of hard riding i can tell you this.i bought all the ball bearings on line,and i rebuilt a gear box on a 150 cc from A to Z,i replaced every bearing by high quality japanese ones and this scooter glides,way much better than when i bought it brand new,totally smooth like a japanese scooter..i even replaced the ones in the swing arm as well as the gears..to make it even better i mix my own gear box oil using a viscosity chart and the results are amazing..but i have said enough and the truth is you are a great representation of what a mechanic should be in this great nation..Very few like you,you do make a difference,thumbs up and the very best for you,i feel sorry for pretentious mediocre part changers who live on scamming and lying to make a living
Thanks you for taking the time to write this. I feel your frustration, I’m glad you learned it on your own. I am happy to help others understand. Thanks for the support 🙏
Best expl6I have seen on the CDI. My bike is currently being rebuilt and I am getting a performance CDI. This will also give you more low end torque and High end speed. Amazing what this upgrade can do for your ride.
I am working on a Honda 4TRX300 (that is the 4WD), circa 1996 or 97. The CDI is AC and it is as big as the wrong one (DC) seen in this video. Only one of the wires on the CDI is where and what this video says. Not saying he is wrong, just saying the 4trax is different. Black/Yellow striped: sends power from the CDI to the coil Dark green: ground Light green: is connected to the "reverse" gear switch (I assume it keeps CDI from sending power to the coil if gearing is in reverse). Black/white: is from the run (kill) switch on the handlebar ( and is where the video says it is on the CDI) Blue/yellow: is the signal wire from the pulser (trigger) Yellow: is the power source directly from the stator area. It Ts off one of the 3 yellow wires that sends current from the stator area to the regulator (where it gets changed to DC for charging the battery). The T is BEFORE the regulator, thus, we have an AC CDI.
I have been working on JDs for a long long time and believe it or not this is my first ever experience with a 1969 JD SSI system. But thanks to Rolling Wrench it was a easy way to learn about this system. Great teacher and I found his point by point instructions spot on. Just made my job infinitely easier. I am an old guy and I never even saw on of these units until this past February when a customer asked me why it would run. Opened the hood and saw Solid State Ignition and I said s&@t where did this come from? LOL This must have been a year year engine. Thanks for the help.
Very complete explanation, I liked how all eventualities that one can meet, are axplained in one video, so that I don´t have to "puzzle" my understanding together from several, and often controvercsial-to-each-other videos...
Thanks for the review. I have an old '85 Honda I'm trying to revive. With all the Chinese junk peddlers out there I was getting confused as to which (AC or DC) CDI unit I needed for my bike. Thanks to your video I'm better prepared to make the correct choice.
I recently got a 1986 kaw Concourse and cannot get fire at the plugs.? Voltage from IGN to CDI box 12v or 9v for security, I have heard that there's a diode on IGN that reduce the voltage. Have juice at coils. It's the only one I can not seem to crank. Bumbing me out.
Diodes aren't used in a circuit to alter voltage,resistors are.Diodes conduct current in one direction only,like a one way valve.Voltage drop over a diode is usually 0.7 volts,unless it's a Zener diode.
Great vid! A video about how to test the triger signal would be great too. Not just for resistance but for generated voltage while cranking too. And maybe how to simulate a triger signal with an AA batery to see how your CDI is Ok or at least ok to start your bike.
this makes sense to me now. Recently got a GY6 150cc in a 'as parts' state. It had 2 CDI's with it and the one plugged in produced spark and ran but it refused to switch off with the key, the kill switch wire was in a permanent grounded state which means it should have never run. Problem was loop wire to the bike stand which I removed. I switched the CDI also to a known-good GY6 50cc one (which was smaller in size) and it ran perfectly with the on-off key. The scooter came with parts from also a pit bike. My conclusion is now that the 1 connected to the scooter on receiving it was a DC one and incorrect (likely off pit bike) and the other CDI an AC one. But the one off a 50cc works just fine anyway so ill stick with that!
Incredible video on CDI boxes and how they work. I have a 2010 Brute Force 750 and I was in the process of taking the battery out and before I could detach the battery terminals it slipped and made contact with the frame of the bike. I heard an electrical distortion as if a fuse had blown but all fuses are good and it appears the relays are ok too. Now when I turn the ignition to on the light switch doesn't work or the push start button won't work either and the fan immediately comes on. Also the FI is flashing codes 11, 12, and 14 which have nothing to do with my issue. I also tried bridging the solenoid to see if it would start. It will turn over but not crank. After unplugging the Fuel Pump relay I ran a jumper wire from the input directly to the positive battery terminal to see if the pump would run and it turned on instantly. Another interesting discovery was that when I hooked the battery up to a charger and combined it with the jumper wire to the battery charger positive terminal my electric headlights and push-start button was working again but the bike still won't start. It sounds like it wants to start but just simply continues to turn over. If anyone knows the reason or could pinpoint what the issue is feel free to share thanks.👍😎👌
@@jerrybigrig9475 No still no luck. I did discover today that for some strange reason my rear spark plug coil shuts down all electrical power to the ATV only when it's connected to the spark plug depending on how you move the coil. Under normal circumstances it's nothing really unusual about that but I'm not understanding why all the electrical power would shutdown because of a simple spark plug/coil connection. I don't have any spark from both coils. I never could of imagined that a battery could cause this much electrical damage and confusion.😳
there are also some CDIs with strange wirings. Some Qingqi use both AC and DC. The DC is only for the microchip. SYM Mio the same but 2 wires changed place compared to that Quingqi. It's an open field finding out all differrent wirings on CDIs. Greets from Germany!
Thanks! I was wondering how it is working... I am working on a Tuk Tuk in Thailand with a Honda dream 100 engine and the wiring harness has been messed up in a savage way... I fixed up pretty much everything now but I wanted to understand and check the CDI. Great video!
they simply use Cheap stock Cdi from China.. Lihua or Lifan CDi that gives Unlimited RPM but some needs conversion... if u want simple plug and play performance cdi buy dual band cdi w/c is costly
Your videos are the best out there, because they explained thoroughly with detail. You try your best to make sure the viewer understands, by using illustrations etc. Thanks! Another subscriber. BY the way, I installed a new Stator the other day (my current one was working, I just thought I’d install a new one), but in the process, I think I may have moved the timing cover, and forgot to put it back to TDC. Now no start.
Yes I really got a lot out of your video about the CDI box. My Honda Trail ct110 has seven wires not six and I can't get a CDI box with seven pins what should I do? Your video has helped me but please if you want to make a video for that it would be great. I wish I could just plug & go. [Also subscribed] oh by the way my cdi has sowlen and the casing is chipped the bike starts to sputter very bad at 35mph and even quits. Please reply 🙏 what to do with the wire with no pin?
Hi Rolling Wrench, you have done well, almost missed out on this given , the dc_ ac _ cdi box at the proper time. It sure stagnate everything with fixes and thanks a lot for your help today! You' re the Best?!?
Thanks Honda dio AF34 DC cdi 1version ok . I fixed it for 1 week. They write a lot of connections, Russian and Japanese pages, and they are good too. specified, looks the same on the outside but must be measured with a multimeter to be sure
Awesome video!. very informative. I ' m currently working on a LM200 American Sport workers for an elderly couple so can get around their property. The compliant the engine has no power to the spark plug and before it stopped running it was idling to fast. Any help for the couple would be very appreciated. God Blees.
So... I've got a Yamaha xs 1100 it has 2 pickup coils for ignition..so if my cdi box is bad and no longer available ..I probably could run two of these DC controllers ...??
I love the fact, u touched base on the basic parts of a c.d.I. But, I’m also interested in the racing side details after switching to upgrades. What’s the best. Why & why not upgrade. Is it even wroth switching or is it more then just a quick easy fix to upgrade the ignition system.
Thank you. I think I have to replace my CDI box. Love my 50cc scooter, thanks for the detailed diagrams. When I bought the scooter, 1 yr ago, I didn't know -- does it have water, xmission fluid, oil, what? Where? How. Today, I've changed the oils x 2, replaced myriad hoses, vacuum lines, gas lines, filter w/ a petcock, even. I digress. Thank you.
a better expansion of ac would be beneficial i got some but not all i would like you to demonstrate how it works in a modal please, can point's be put in place of the trigger to collapse the coile , ?
Hey there rolling wrench, I'm hoping you can shed some light on a couple issues I'm having from 2 different upgrade parts I installed on my 2006 Honda CRF450X SuperMoto. The first one is my 100watt stator and reg/rectifier kit from TRAIL TECH. What I am confused with is the regulator/rectifier that came with this kit. There are 2 adjustable knobs on the top, one is for setting "delay" and the other is for "voltage". The only info I have on this is from the installation instruction sheet that came with the kit, and that consist of a single paragraph accompanied with a picture of the REG/REC under the title "adjusting REG/REC relay timer" and little red arrows pointing to the obvious, to the dial labeled "delay" and the other "voltage". Basically, all it says is "adjust delay dial cw to decrease relay active time", then of course ccw to increase relay active time, and literally nothing about the voltage dial. Can you help me with this? I mean what relay am I activating for delay time increase or decrease? The other upgrade is a VORTEX X10 CDI. Now like the TRAIL TECH installation sheet, the VORTEX install sheet has it's points of similar vagueness. It has to do with the bullet connecter end grey wire. All it says is; "now plug in the bullet end grey wire". And that's it, all the rest of the installation instructions were complete ie connect this to that, or route this wire from pin "x" to pin "y". So do you think you can help me out with where that grey wire plugs to? Thank you so much for your time efforts and help regarding this matter. Lee
Hey Matt. How Are You? It's Fred The Musician Over on Clarkson. My Scooter, the People 250 was stolen then I got it back. I'm trying to install an ignition switch but i'm sort of lost in the wiring cuz they hotwired it. I called you but phone message says you're not taking ANY appointments. So, it's just me. Also, the seat is GONE and KYMCO doesn't make them anymore. I bought a seat off ebay and it was HUGE. I threw it away. Wasted 70 dollars. If you can find a seat for a 2004 KYMCO People 250 you would be my hero. Please start taking appointments again. I need you. Thanx...Fred.
Just to complicate things further, some ac boxes are also big ones, and some have those kill switch and ac feeds other way around. You notice that when the engine runs just fine with the new box but does not stop from the key or kill switch... I had to make an adapter that reverses the order for my spare box
Didnt know where else i could ask a question. Working on a tao tao i believe its about a 200cc. Several years old. No spark. The stator tested bad on the blue wire. Thats fine. But theres another component separate from the stator area. Its harness runs in-between the stator house and front sprocket house. The component has 2 #2 Phillips 6mm screws holding it to a shaft with a counter or magnet on it. Also is wet with oil. I need to know about that component. is it a trigger/pickup? Etc etc etc. Of course theres more info but too much to say here. Thanks Bo
I have a falcon 250cc or venom gtx automatic motorcycle with a 250gy6 and it has a AC and a DC cdi. Haven't jumped into harness to know why yet but if I ride the bike before it's all the way warmed up, going down the road, the electrical tries to switch to a different setting and my headlights will go off then on for a min until I get it warmed up with rpm then it switches current I think because it will reset my neons that are directly connected to the battery. Everything is new and works great tho. Just found having both cdis crazy. I do need to upgrade a8 pole stator to my other bike tho.. 2 good new ones still not supplying enough power. Has to be it to because I've changed every single electrical thing in the bike. Every single thing. It's all working just not enough. Hope to find help somewhere about the 8 pole upgrade but not much that I've found on how to change the wires and cdi and rectifier for the white yellow green connector
So what are the down sides/ cautions to a performance CDI box? Increased maintenance schedule, wear out parts faster( which are most likely to wear our first)? Nothing is free... Especially in performance.
Doing a great job.I always go too your videos...keep up the good work... Oh I am putting a 500 Cc motor in a 150 cc 2008 Chinese scooter. With side car.
Great videos as usual, I have a Lance Venice 150, it came to me with no CDI in it, I have no spark on the bike and I think its beacuse this is not hooked up, the wires are in groups but Im not sure where to start to even FIND these wires to hookup a CDI, and how would I know to order a DC or AC CDI? any ideas to help me? TY again for all you work
Please you are really educating me. I have an old suzuki dr 650 Zen, dirt bike, which is not starting and all wires are out. How can I bridge or bypass the system to do conversion wiring to get it functional
You deserve a thousand likes Can you explain about the tubes and barrel of the environment that is tied behind the seat under the bakelite? It comes with a hose from the gasoline tank. If you don't know it, I will send you its name because I don't remember it now.
I have came to a dead end with my turn signals. Then I remembered that I switched out my cdi box from a smaller one to a bigger one. I’m going back to the smaller cdi box tomorrow.
Wait.. what? Turning signals has nothing to do with CDI. If your signals are not turning on properly or not not turning on at all, that could be: the flasher, turning signals switch, ground or wires.
thank you i didnt no i thought all cdi boxs was the same so that is my problem i have ac and need dc but mine doesnt have black and red wire coming from stator just yellow white and blue and white
I know that there’s been a lot of discussion out there about aftermarket parts. In your professional opinion do you feel that swapping out the original cdi box in any Chinese scooter for example any of the mad dog generations is worth it. Is it truly a better upgrade than the stock cdi box.
Reply we now i have done it yes, They brak far too easily & we do not all have account on ebay & such, a trip to the local store do's me, if i can't get it there i'm not interested, So until their on the self & can be conveniently replast easily broken yes easily replast NO. But not so good, if your in to deep diving a ATV. i see a lot off , The points will let you down. But then thats not for me all throw there's a way around that. but i'm not in to taking ATV, in to deep water . as mos do .
Your video was great except you need THE CDI box with the knob dial THAT will advances the ignition timing . And also you need to show everyone the part on your multimeter on OHN'S because all multimeters are not the same on your OHN'S. On your other video if this makes any sense to YOU .
I'm glad you take time to explain stuff very clearly. I'm a big fan and wish I would've watched before I ordered mine. Yup got the wrong one!! Did I damage something by trying to start it?
I liked your explanation of the box but you need to check the wiring harness that plugs into the box..Not the box itself without wires..I understand it because I know what your talking about but someone that knows nothing may not understand the way you explained it..I was also left wanting how to test the stator outputs for A/C & D/C..🤔
Great video - thank you. I have. 2 stroke that I am having a nightmare setting the timing on, and suspect the CDI is faulty, and this is a great video.
Edison's theory: Manage the power according to price rate or if they want more power, make a "Racing CDi" w/c is more expensive.. Tesla's Theory: No RPM limiter at d cheapest Price... (Lihua, Lifan CDi's)
Thing is people need to know why there is a limiter and the proper way to use this knowledge. My scooter is rated by the factory at 10.58Hp/7500r/min. It has a limiter. Assuming the limitation is in the CDI (It may not be, it could be in the variator, exhaust, air intake or carb) and you change it to a non limited CDI, you need to have a tachometer to keep tabs on your rpm's. You want cruise speed plus a little extra for passing at cruise speed without going redline (up to or over that 7500r limit). If you maintain 7500 rpm's you may get to 60 mph plus say on a 150cc but then you are damaging your engine. So we back that down to say 7000 Max with a limiter and you'll never have to worry about prematurely damaging your engine. Folks should FIRST get a tachometer if they don't have one and determine the rpm's at which the limiter kicks in, compare that to their factory specs and that will tell you if it's safe to remove or change the limitation or not. Many CDI's are programable for that reason.. you can bump up the limiter if more speed is desired and still allow a safe engine range.
😳 WOW 🤔 So my DC CDI box does controller a scooter speed.So am I right about this?And if I am.If I buy a high performance DC CDI box to make it go a little faster .🤔Will it still work with the carburetor set up I got in it now for my 50cc scooter? 😉And thank you so much for explaining CDI boxes lol because I really didn't know if I had a DC or an AC .Now I know just which one I have now from looking at your video here on UA-cam and congratulations 👏👏👊I am now a subscriber to you now🏆👍!
Wow, Mr genius great learning video. Two thumbs up. My question: i hav da most fuked up chi nah quad. My rectifier is plastic. Blk red pnk gry gree wires comes out of rectifier. Black n pnk not connected. Grn red gry goes to the vehicle. I bought a new one has 5 wires. Blk red yel pnk grn. How do i connect this new with existing blk red gry? Pls help n God bless you!
I just subscribed! Can you make a video to show how to wire a lifan 140cc with minimal wires used? I'm trying to simplify a 140cc sikk ped motor swap. 🤘😁 Also couldn't help but notice your cdi examples were almost the same wire configuration. I wonder how a 50cc cdi varies from say a 140cc. On some engines I've noticed that they appear different. Can I use just any cdi, or are they engine specific?
It would have been simple to hook up a light test to it because with the light test it test is for current if it lights up it's a DC CDI if it doesn't it's an AC CDI or the other way around I don't remember though but that's one great way to check
Hi, I just bought two 150cc Chinese scooters, Biella models, manufactured by buyshun(?). From ATVscooterstore, a GREAT place to purchase from-very honest and trustworthy. I would like any recommendations you have for things I can do to enhance safety, reliability, and performance. I just uncrated them so now's the time. I appreciate your very informative videos, mighty helpful. This is a new chapter for my wife and I, we still have a beautiful Goldwing but bad joints are making it hard to ride. Thank you, Stevie.
My cdi box is wired like the AC in your drawing. (Only 1 ground). But indeed it’s a dc one since I get power when I turn the key to ACC mode. 150cc kandi go cart
I love your videos that explains a lot of things I needed to know..where can I get one for a 05 kymco venox 250 motorcycle on line.i live in sa.tx. keep up with your videos.i live them
![GY6 AC vs DC Stator/CDI [ How does it work? What is best? ]](http://i.ytimg.com/vi/oKtFJaJh_kw/mqdefault.jpg)
![GY6 AC vs DC Stator/CDI [ How does it work? What is best? ]](/img/tr.png)
![HOW TO TEST A STATOR / WHAT IS A STATOR [step by step] GY6](http://i.ytimg.com/vi/VoXYzQ61tRM/mqdefault.jpg)
Thanks! Using this video and some wiring schematics I was able to replace a $271.90 part (32900-05210) (7 wire) with a $7.49 part (5 wire) and get my brother's Suzuki 125SP running again - after being dormant for about 30 years.
The original CDI would fire at low RPM (kick starting), but not higher RPMs (idle), so the bike would fire but never run for more than a few revolutions. We worked with the carburetor for way too long before we decided that it might not be getting spark at more than kick starting RPMs.
That's amazing.
Its hard to find dudes who explains these stuff so well like you do.thanks for sharing this man, one more subscriber for you!
Thank you 🙏 that means a lot! I appreciate the support
In addition to giving a very good lecture on cdi boxes, you also gave a perfect lecture on how to make a good video: Loud, clear and well explained. Great job.
Sweeet! Thanks for the support 🙏
Agreed
I need some help
@@RollingWrench can you please help me out with my scooter
@@zado3145 yes no problem:
www.rollingwrenchdenver.com/products/rolling-wrench-tech-support-help?keyword=tech%20
A great explanation of how the cdi works. After two or three weeks of searching, you gave me a plain and simple way to check my ignition system. Flustered and P Oed' I had almost given up on what or how to proceed. Thanks bunches for a great video. I now have a new trail to follow.
Perfect! This is why I do these videos, for comments like this! Thank you 🙏
Electrical diagnostics can be frustrating for sure
That's the clearest explanation of a scary issue I ever heard. Thank you.
Man I'm new to gy6 engines. The way you explain things makes it so simple to understand how it all works. Thanks for the great information.
You have that ignate soul of a teacher,Nowadays i can proudly say i know all this by heart.I am a telecommunication technician and understand how these things work very well.I wish i had seen this video 3 or four years ago when the so called mechanics of Miami got me so frustrated that i decided to learn by myself,i feel i live in the outback,what a disaster..I have been through hell and back learning everything about scooters and motorcycles..I have had 28 motorcycles and scooters combined.I am 52..and nowadays when i watch videos of mechanics i can tell right away who is a part changer ,like the ones i ran away from and a real mechanic that makes perfect sense like you..I give you credit,the highest credit for your true knowledge and will to share it with others..You do not need advertizing because you do know what you are doing and saying,and i am very proud of you..Even though this is something i know very well i want to thank you for your time and dedication..If i had met a mechanic like you,i would not know what i know today..Nowadays i love this,but when you depend on yourself to fix your vehicles without knowing these things , like it happened to me.it gets really frustrating,now at the end of the road i feel i have won a battle..I see more than a few thumb downs on this video,and these are probably dudes who are jealous of your high IQ..Disregard these pigs that only think about eating their next meal..These are the dudes who unethically oppose people like you and me ,because we earn our living honestly with transparency and honesty..When you are good,and you are excellent,you can be showing it all,and yet you will become even a stronger magnet to attract great customers to your business,versus the shady dudes whose mechanical practices suck..i do not do this for a living and i have parts and tools most shops here in Miami do not have and thats embarrassing.For years i heard things from shop owners here that are too frustrating to mention publicly..One thing i do wanna say is, many mechanics would tell me that it would be better to buy a new engine than to fix anything in the gear box.I was not sure about that and one day i bought a 12 ton shop press and people laughed at me.Today after 12000 miles of hard riding i can tell you this.i bought all the ball bearings on line,and i rebuilt a gear box on a 150 cc from A to Z,i replaced every bearing by high quality japanese ones and this scooter glides,way much better than when i bought it brand new,totally smooth like a japanese scooter..i even replaced the ones in the swing arm as well as the gears..to make it even better i mix my own gear box oil using a viscosity chart and the results are amazing..but i have said enough and the truth is you are a great representation of what a mechanic should be in this great nation..Very few like you,you do make a difference,thumbs up and the very best for you,i feel sorry for pretentious mediocre part changers who live on scamming and lying to make a living
Thanks you for taking the time to write this. I feel your frustration, I’m glad you learned it on your own. I am happy to help others understand. Thanks for the support 🙏
One of the simplest video I've ever come across.... thank you, this video you made helped me a lot
Best expl6I have seen on the CDI. My bike is currently being rebuilt and I am getting a performance CDI. This will also give you more low end torque and High end speed. Amazing what this upgrade can do for your ride.
Do you know which performance CDI will be best for 150cc dc?
Thanks so much i have purchased 5 a/c cdi boxes till i saw this video now my bike works like a dream
I am working on a Honda 4TRX300 (that is the 4WD), circa 1996 or 97. The CDI is AC and it is as big as the wrong one (DC) seen in this video.
Only one of the wires on the CDI is where and what this video says. Not saying he is wrong, just saying the 4trax is different.
Black/Yellow striped: sends power from the CDI to the coil
Dark green: ground
Light green: is connected to the "reverse" gear switch (I assume it keeps CDI from sending power to the coil if gearing is in reverse).
Black/white: is from the run (kill) switch on the handlebar ( and is where the video says it is on the CDI)
Blue/yellow: is the signal wire from the pulser (trigger)
Yellow: is the power source directly from the stator area. It Ts off one of the 3 yellow wires that sends current from the stator area to the regulator (where it gets changed to DC for charging the battery). The T is BEFORE the regulator, thus, we have an AC CDI.
I have been working on JDs for a long long time and believe it or not this is my first ever experience with a 1969 JD SSI system. But thanks to Rolling Wrench it was a easy way to learn about this system. Great teacher and I found his point by point instructions spot on. Just made my job infinitely easier. I am an old guy and I never even saw on of these units until this past February when a customer asked me why it would run. Opened the hood and saw Solid State Ignition and I said s&@t where did this come from? LOL This must have been a year year engine. Thanks for the help.
awesome job- you did that in a way that almost everyone can understand
Very complete explanation, I liked how all eventualities that one can meet, are axplained in one video, so that I don´t have to "puzzle" my understanding together from several, and often controvercsial-to-each-other videos...
Thanks for the review. I have an old '85 Honda I'm trying to revive. With all the Chinese junk peddlers out there I was getting confused as to which (AC or DC) CDI unit I needed for my bike. Thanks to your video I'm better prepared to make the correct choice.
I recently got a 1986 kaw Concourse and cannot get fire at the plugs.? Voltage from IGN to CDI box 12v or 9v for security, I have heard that there's a diode on IGN that reduce the voltage. Have juice at coils. It's the only one I can not seem to crank. Bumbing me out.
Diodes aren't used in a circuit to alter voltage,resistors are.Diodes conduct current in one direction only,like a one way valve.Voltage drop over a diode is usually 0.7 volts,unless it's a Zener diode.
Great vid! A video about how to test the triger signal would be great too. Not just for resistance but for generated voltage while cranking too. And maybe how to simulate a triger signal with an AA batery to see how your CDI is Ok or at least ok to start your bike.
Thanks, some of the most helpful info in a situation with no spark! Great video thank you
And again. . . . . .thank you for another well explained video taking the mystery out of CDI ignitions.
From Kelowna British Columbia Canada
Great Explanation. Just what I needed to solve the problem with my Polaris 90 quad. Thanks
this makes sense to me now. Recently got a GY6 150cc in a 'as parts' state. It had 2 CDI's with it and the one plugged in produced spark and ran but it refused to switch off with the key, the kill switch wire was in a permanent grounded state which means it should have never run. Problem was loop wire to the bike stand which I removed. I switched the CDI also to a known-good GY6 50cc one (which was smaller in size) and it ran perfectly with the on-off key. The scooter came with parts from also a pit bike. My conclusion is now that the 1 connected to the scooter on receiving it was a DC one and incorrect (likely off pit bike) and the other CDI an AC one. But the one off a 50cc works just fine anyway so ill stick with that!
Incredible video on CDI boxes and how they work. I have a 2010 Brute Force 750 and I was in the process of taking the battery out and before I could detach the battery terminals it slipped and made contact with the frame of the bike.
I heard an electrical distortion as if a fuse had blown but all fuses are good and it appears the relays are ok too. Now when I turn the ignition to on the light switch doesn't work or the push start button won't work either and the fan immediately comes on. Also the FI is flashing codes 11, 12, and 14 which have nothing to do with my issue. I also tried bridging the solenoid to see if it would start. It will turn over but not crank.
After unplugging the Fuel Pump relay I ran a jumper wire from the input directly to the positive battery terminal to see if the pump would run and it turned on instantly.
Another interesting discovery was that when I hooked the battery up to a charger and combined it with the jumper wire to the battery charger positive terminal my electric headlights and push-start button was working again but the bike still won't start. It sounds like it wants to start but just simply continues to turn over. If anyone knows the reason or could pinpoint what the issue is feel free to share thanks.👍😎👌
Did you get it running ..??
@@jerrybigrig9475 No still no luck. I did discover today that for some strange reason my rear spark plug coil shuts down all electrical power to the ATV only when it's connected to the spark plug depending on how you move the coil. Under normal circumstances it's nothing really unusual about that but I'm not understanding why all the electrical power would shutdown because of a simple spark plug/coil connection. I don't have any spark from both coils. I never could of imagined that a battery could cause this much electrical damage and confusion.😳
Finally someone that explains it to me like I’m stupid.
Hello brother, your explanation is very nice and simple with pictures that,s make easy to understand. Thanks, with all respect
Thanks for the kind words
that was the best video about cdi i have seen..very helpful when you have problem with ignition ..thanx man!👍
Thanks for taking the time to leave a positive comment. Thanks for the support 🙏
How about an episode on choosing the best roller weights for different riding needs?
Thank you sir you are a gentlemen and a scholar. FYI your CDI being reversed next to the drawing was killing my OCD lol.
Thank you so much for this video. totally justifies spending the extra in your shop.
there are also some CDIs with strange wirings.
Some Qingqi use both AC and DC. The DC is only for the microchip. SYM Mio the same but 2 wires changed place compared to that Quingqi.
It's an open field finding out all differrent wirings on CDIs.
Greets from Germany!
Thanks! I was wondering how it is working... I am working on a Tuk Tuk in Thailand with a Honda dream 100 engine and the wiring harness has been messed up in a savage way... I fixed up pretty much everything now but I wanted to understand and check the CDI. Great video!
👌 ooohhhhh how I love Thailand!
they simply use Cheap stock Cdi from China.. Lihua or Lifan CDi that gives Unlimited RPM but some needs conversion... if u want simple plug and play performance cdi buy dual band cdi w/c is costly
Perfect explanation, exactly what I needed to know, and to the point.... Thanks.
Thanks for the support 🙏🏻💯
Super informative video. So much helpful information, this is my LAST video I'll be watching about CDI's. ✌
Your videos are the best out there, because they explained thoroughly with detail. You try your best to make sure the viewer understands, by using illustrations etc. Thanks! Another subscriber. BY the way, I installed a new Stator the other day (my current one was working, I just thought I’d install a new one), but in the process, I think I may have moved the timing cover, and forgot to put it back to TDC. Now no start.
You really need to have atleast knowledge on basics how motorcycle works in order to appreciate how clear this dude explains everything
👍
Thanks, very good video on CDI units. I would like to see more information on how the CDI unit rev limits and advances the timing.
Thanks for the support 🙏. I’ll work on that video
Great video like how you explained everything made it easier to understand
Yes I really got a lot out of your video about the CDI box. My Honda Trail ct110 has seven wires not six and I can't get a CDI box with seven pins what should I do? Your video has helped me but please if you want to make a video for that it would be great. I wish I could just plug & go. [Also subscribed] oh by the way my cdi has sowlen and the casing is chipped the bike starts to sputter very bad at 35mph and even quits. Please reply 🙏 what to do with the wire with no pin?
Hi Rolling Wrench, you have done well, almost missed out on this given , the dc_ ac _ cdi box at the proper time. It sure stagnate everything with fixes and thanks a lot for your help today! You' re the Best?!?
Thanks Honda dio AF34 DC cdi 1version ok . I fixed it for 1 week. They write a lot of connections, Russian and Japanese pages, and they are good too. specified, looks the same on the outside but must be measured with a multimeter to be sure
The most informative video I’ve seen on the subject
Thank you so much
Thanks for the feedback :-)
Best vids I've ever seen on cdi boxes thank you so much God bless ya.
Sweeet! Thanks for the positive vibes 🙏
Get a test light. They’re a few bucks and are indispensable. Great video.
Nice My natutunan ako 😁 I'm Also Electrician Thanks 😊
Awesome video!. very informative. I ' m currently working on a LM200 American Sport workers for an elderly couple so can get around their property. The compliant the engine has no power to the spark plug and before it stopped running it was idling to fast. Any help for the couple would be very appreciated. God Blees.
Great explanation tutorial on the CDI boxes. thanks for posting. cheers
Thanks for letting me know about the CDI
So...
I've got a Yamaha xs 1100 it has 2 pickup coils for ignition..so if my cdi box is bad and no longer available ..I probably could run two of these DC controllers ...??
I love the fact, u touched base on the basic parts of a c.d.I. But, I’m also interested in the racing side details after switching to upgrades. What’s the best. Why & why not upgrade. Is it even wroth switching or is it more then just a quick easy fix to upgrade the ignition system.
I also want to add, and correct me if im wrong,
A bike with a AC cdi does not need a battery to work. It can work without a battery. The dc cdi dont
Thank you. I think I have to replace my CDI box. Love my 50cc scooter, thanks for the detailed diagrams. When I bought the scooter, 1 yr ago,
I didn't know -- does it have water, xmission fluid, oil, what? Where? How. Today, I've changed the oils x 2, replaced myriad hoses, vacuum lines, gas lines, filter w/ a petcock, even. I digress. Thank you.
Our arctic cat 90 4 stroke is DC and has a kill wire next to the hot coming in , the dual plug .
a better expansion of ac would be beneficial i got some but not all i would like you to demonstrate how it works in a modal please, can point's be put in place of the trigger to collapse the coile , ?
Hey there rolling wrench, I'm hoping you can shed some light on a couple issues I'm having from 2 different upgrade parts I installed on my 2006 Honda CRF450X SuperMoto. The first one is my 100watt stator and reg/rectifier kit from TRAIL TECH. What I am confused with is the regulator/rectifier that came with this kit. There are 2 adjustable knobs on the top, one is for setting "delay" and the other is for "voltage". The only info I have on this is from the installation instruction sheet that came with the kit, and that consist of a single paragraph accompanied with a picture of the REG/REC under the title "adjusting REG/REC relay timer" and little red arrows pointing to the obvious, to the dial labeled "delay" and the other "voltage". Basically, all it says is "adjust delay dial cw to decrease relay active time", then of course ccw to increase relay active time, and literally nothing about the voltage dial. Can you help me with this? I mean what relay am I activating for delay time increase or decrease? The other upgrade is a VORTEX X10 CDI. Now like the TRAIL TECH installation sheet, the VORTEX install sheet has it's points of similar vagueness. It has to do with the bullet connecter end grey wire. All it says is; "now plug in the bullet end grey wire". And that's it, all the rest of the installation instructions were complete ie connect this to that, or route this wire from pin "x" to pin "y". So do you think you can help me out with where that grey wire plugs to? Thank you so much for your time efforts and help regarding this matter.
Lee
Aye bro love the vid , but which is better for a 125 four wheeler ?
Hey Matt. How Are You? It's Fred The Musician Over on Clarkson. My Scooter, the People 250 was stolen then I got it back. I'm trying to install an ignition switch but i'm sort of lost in the wiring cuz they hotwired it. I called you but phone message says you're not taking ANY appointments. So, it's just me. Also, the seat is GONE and KYMCO doesn't make them anymore. I bought a seat off ebay and it was HUGE. I threw it away. Wasted 70 dollars. If you can find a seat for a 2004 KYMCO People 250 you would be my hero. Please start taking appointments again. I need you. Thanx...Fred.
Could you show how to test a cdi Box with a voltmeter? Thanks, enjoyed this video a lot!
Very Good explanation just a few questions what is inside the pick up coil does it send voltage to to cdi?
Really love this man 👍 I hope you also have video regarding why batteries gets bloated
That was a great video learning and very understanding for sure
Just to complicate things further, some ac boxes are also big ones, and some have those kill switch and ac feeds other way around. You notice that when the engine runs just fine with the new box but does not stop from the key or kill switch... I had to make an adapter that reverses the order for my spare box
love your video clear and precise explanation more people should use your video as a guide to excellence ,cheers!
I have three connections like that green-,White, blue and red-black, one was not in use as far as I can remember
Didnt know where else i could ask a question.
Working on a tao tao i believe its about a 200cc. Several years old. No spark.
The stator tested bad on the blue wire.
Thats fine. But theres another component separate from the stator area. Its harness runs in-between the stator house and front sprocket house. The component has 2 #2 Phillips 6mm screws holding it to a shaft with a counter or magnet on it. Also is wet with oil. I need to know about that component. is it a trigger/pickup? Etc etc etc. Of course theres more info but too much to say here. Thanks
Bo
Hello bro From algeria , , i really apreciate your video , a good one
I have a falcon 250cc or venom gtx automatic motorcycle with a 250gy6 and it has a AC and a DC cdi. Haven't jumped into harness to know why yet but if I ride the bike before it's all the way warmed up, going down the road, the electrical tries to switch to a different setting and my headlights will go off then on for a min until I get it warmed up with rpm then it switches current I think because it will reset my neons that are directly connected to the battery. Everything is new and works great tho. Just found having both cdis crazy. I do need to upgrade a8 pole stator to my other bike tho.. 2 good new ones still not supplying enough power. Has to be it to because I've changed every single electrical thing in the bike. Every single thing. It's all working just not enough. Hope to find help somewhere about the 8 pole upgrade but not much that I've found on how to change the wires and cdi and rectifier for the white yellow green connector
So what are the down sides/ cautions to a performance CDI box? Increased maintenance schedule, wear out parts faster( which are most likely to wear our first)? Nothing is free... Especially in performance.
Doing a great job.I always go too your videos...keep up the good work...
Oh I am putting a 500
Cc motor in a 150 cc 2008 Chinese scooter.
With side car.
Great videos as usual, I have a Lance Venice 150, it came to me with no CDI in it, I have no spark on the bike and I think its beacuse this is not hooked up, the wires are in groups but Im not sure where to start to even FIND these wires to hookup a CDI, and how would I know to order a DC or AC CDI? any ideas to help me? TY again for all you work
Please you are really educating me. I have an old suzuki dr 650 Zen, dirt bike, which is not starting and all wires are out. How can I bridge or bypass the system to do conversion wiring to get it functional
You deserve a thousand likes
Can you explain about the tubes and barrel of the environment that is tied behind the seat under the bakelite? It comes with a hose from the gasoline tank. If you don't know it, I will send you its name because I don't remember it now.
I have came to a dead end with my turn signals. Then I remembered that I switched out my cdi box from a smaller one to a bigger one. I’m going back to the smaller cdi box tomorrow.
Wait.. what? Turning signals has nothing to do with CDI. If your signals are not turning on properly or not not turning on at all, that could be: the flasher, turning signals switch, ground or wires.
thank you i didnt no i thought all cdi boxs was the same so that is my problem i have ac and need dc but mine doesnt have black and red wire coming from stator just yellow white and blue and white
I know that there’s been a lot of discussion out there about aftermarket parts. In your professional opinion do you feel that swapping out the original cdi box in any Chinese scooter for example any of the mad dog generations is worth it. Is it truly a better upgrade than the stock cdi box.
Reply we now i have done it yes, They brak far too easily & we do not all have account on ebay & such, a trip to the local store do's me, if i can't get it there i'm not interested, So until their on the self & can be conveniently replast easily broken yes easily replast NO. But not so good, if your in to deep diving a ATV. i see a lot off , The points will let you down. But then thats not for me all throw there's a way around that. but i'm not in to taking ATV, in to deep water . as mos do .
Wtf did you just say? Broken English. Nothing made sense.
Really great explanation. Thank you!
You're very welcome!
Your video was great except you need THE CDI box with the knob dial THAT will advances the ignition timing . And also you need to show everyone the part on your multimeter on OHN'S because all multimeters are not the same on your OHN'S. On your other video if this makes any sense to YOU .
I'm glad you take time to explain stuff very clearly. I'm a big fan and wish I would've watched before I ordered mine. Yup got the wrong one!! Did I damage something by trying to start it?
Excellent video! Appreciate the time and effort!!!
My pleasure!
How to test the cdi box to see if it is good. Also very good video. well covered
I liked your explanation of the box but you need to check the wiring harness that plugs into the box..Not the box itself without wires..I understand it because I know what your talking about but someone that knows nothing may not understand the way you explained it..I was also left wanting how to test the stator outputs for A/C & D/C..🤔
I have a separate video for that :-) thanks for the support
Great video - thank you. I have. 2 stroke that I am having a nightmare setting the timing on, and suspect the CDI is faulty, and this is a great video.
Edison's theory: Manage the power according to price rate or if they want more power, make a "Racing CDi" w/c is more expensive..
Tesla's Theory: No RPM limiter at d cheapest Price... (Lihua, Lifan CDi's)
Thing is people need to know why there is a limiter and the proper way to use this knowledge. My scooter is rated by the factory at 10.58Hp/7500r/min. It has a limiter. Assuming the limitation is in the CDI (It may not be, it could be in the variator, exhaust, air intake or carb) and you change it to a non limited CDI, you need to have a tachometer to keep tabs on your rpm's. You want cruise speed plus a little extra for passing at cruise speed without going redline (up to or over that 7500r limit). If you maintain 7500 rpm's you may get to 60 mph plus say on a 150cc but then you are damaging your engine. So we back that down to say 7000 Max with a limiter and you'll never have to worry about prematurely damaging your engine. Folks should FIRST get a tachometer if they don't have one and determine the rpm's at which the limiter kicks in, compare that to their factory specs and that will tell you if it's safe to remove or change the limitation or not. Many CDI's are programable for that reason.. you can bump up the limiter if more speed is desired and still allow a safe engine range.
😳 WOW 🤔 So my DC CDI box does controller a scooter speed.So am I right about this?And if I am.If I buy a high performance DC CDI box to make it go a little faster .🤔Will it still work with the carburetor set up I got in it now for my 50cc scooter? 😉And thank you so much for explaining CDI boxes lol because I really didn't know if I had a DC or an AC .Now I know just which one I have now from looking at your video here on UA-cam and congratulations 👏👏👊I am now a subscriber to you now🏆👍!
Great video on CDI’s needing a little help figuring out my GY6 If possible
Anyway you could make a external ckt to make a rev limiter or how to electronically control the timing by making a ckt
does it make a difference in the cdi box if its 2 or 4 stroke?
Very well done 👍 I have DCI but doesn’t have fire to it when I turned the key
Great video what’s the green terminal on the coil for then Thanks
Wow, Mr genius great learning video. Two thumbs up. My question: i hav da most fuked up chi nah quad. My rectifier is plastic. Blk red pnk gry gree wires comes out of rectifier. Black n pnk not connected. Grn red gry goes to the vehicle. I bought a new one has 5 wires. Blk red yel pnk grn. How do i connect this new with existing blk red gry? Pls help n God bless you!
I just subscribed! Can you make a video to show how to wire a lifan 140cc with minimal wires used? I'm trying to simplify a 140cc sikk ped motor swap. 🤘😁
Also couldn't help but notice your cdi examples were almost the same wire configuration. I wonder how a 50cc cdi varies from say a 140cc. On some engines I've noticed that they appear different. Can I use just any cdi, or are they engine specific?
It would have been simple to hook up a light test to it because with the light test it test is for current if it lights up it's a DC CDI if it doesn't it's an AC CDI or the other way around I don't remember though but that's one great way to check
Is it possible to use an AC if you had a DC before?
Thank you so much for the video!!!
Well is it
No
Your DC system won't have the pulse coils that are needed.
Hi,
I just bought two 150cc Chinese scooters, Biella models, manufactured by buyshun(?). From ATVscooterstore, a GREAT place to purchase from-very honest and trustworthy. I would like any recommendations you have for things I can do to enhance safety, reliability, and performance. I just uncrated them so now's the time.
I appreciate your very informative videos, mighty helpful. This is a new chapter for my wife and I, we still have a beautiful Goldwing but bad joints are making it hard to ride.
Thank you,
Stevie.
That was a great explanation I'm going to use a points and condenser as a trigger for a protect I have this info it's great for it
good vid! I never stop learning -----if I stop learning i am DEAD!!!!!!!!!!!
Good video. I need some help figuring out if my CDI is bad. I have a no spark on a Panda Trail Rider 70
Love your vids always learn a lot on the ole GY6
Thank you for watching
Awesome video. Is there a way to test the CDI box?
super informative video i sorted mine out by watching this full respect for your time ：)
My cdi box is wired like the AC in your drawing. (Only 1 ground). But indeed it’s a dc one since I get power when I turn the key to ACC mode. 150cc kandi go cart
Also I have the same exact wiring harness from the stator but the red black is unused
I love your videos that explains a lot of things I needed to know..where can I get one for a 05 kymco venox 250 motorcycle on line.i live in sa.tx. keep up with your videos.i live them
Damn good video! EXACTLY what I needed to know.