Thank you so much for this video! I have been looking for a way to wire my switch box and could not figure out how to get through the firewall either. Thanks so much for posting this!!!
You sir, are my hero. I've spent 3 days looking for a way to route my wires for my off road lights. This video just saved me a huge pain in the butt. Thank You.
I’ve been searching for a video like this for WEEKS need to instal a 6swotch niilight rocker in the cab then figure out how to run wires from that to my chase rack lights. So this video gets me half way there
I appreciate you very much. Once I watched the video. It only took a few minutes to cut the boot and feed the wire though. I was able to snake the wire to the drivers side without any issues or pulling anything apart. Again, thanks for the video.
Dude. Thank you! Im finishing up wiring up a set of air horns tomorrow morning and THIS is now what I'm going to do. Was going to go through the antenna grommet but I like your way 100% more. Thanks again!!
Invaluable, this is what I was focusing on as well, you just confirmed it for me. Same exact setup for a 2020 GMC Sierra 1500 (which I have). Thanks Josh.
Brother, this was TERRIFIC!!! I just bought a 2020 Silverado---I'm a ham radio operator and would like to install a portable VHF radio. The power lines on ham radio gear MUST connect to the battery, unlike CB gear that can plug into the lighter. Now I can route the power wires through the firewall. Thanks again!!
aaaaand this video just solved all my problems. Thank you sir. Hooked up power wires for CB radio and a speaker wire for a small PA speaker I installed under the hood. 2021 Chevy Trail Boss. This video applies to 2021 as well. Brilliant. Now if I can only figure out a good way of getting my antenna wire into the cab :)...
It helped out alot! I was trying not to screw myself by making a hole somewhere I shouldn’t be. At first I was trying to use the hood release hole but apparently GM used a rubber fitting which is almost impossible withought breaking something.
I have a 2021 GMC Sierra 1500 crew cab and am looking at running power and antenna wire for ham radios. I have been planning on going through the firewall, but I have found access under the rear seat which I might run power there and antennas from the back and terminate it where the radios will live under the rear seats. I wish there were shop manuals to show the breakdown of OEM parts like what panels to remove and where cable access would be recommended. Anyway, thanks for your video, it was the way I originally intended to do this and still may depends on the trouble I cause for myself. Wish me luck!
Awesome. Just an fyi, I ran mine through the drivers side and it will pop out above the gas pedal. Look for a rubber circle roughly 6 inches wide. Hope this helps
This was excellent, worked on my 2020 2500HD Duramax. I ran into a similar problem on my 2017 GMC 1500 Denali and was really loathing the idea of having to do it again. I went through the drivers side on the Denali and it didn't even have that nifty nipple. It took maybe 5 minutes with 8 gauge power wire, most difficult part was getting in to cut the nipple, a little less room with the big diesel components in the way.
New subscriber here. Thanks for the video. I am trying to figure out routing wire in my Silverado for a Ham radio and antenna. This gives me an idea of what I am up against. Thanks for the video.
This is a huge help! Thank you! Can you show how to connect those wires to the battery, please? Directly to the battery, and I’ve heard that there’s an available, fusable circuit int he fuse box. Where would I connect my wires for a 2-way radio? (Once they are routed through the firewall ‘the easy way’)
This is cool! But I have the Hybrid version of the LT and it has a electrical box where that is, but I have it going around through the door, fed it under the hood and it looks slick
I had to do the exact same thing to get a pwr wire through the f/w. I disconnect the box underneath the glove box just to give myself more room to work. if you disconnect that box thats mounted near the entry point where he ran his wire through the f/w, I suggest disconnecting the neg batter cable first. My question is how will you supply power to the aftermarket device you are installing? I could not find a switched fuse that would work for me, because it kept throwing the check engine light on. Therefore I had to run it straight off the battery and I put an on/off toggle switch on the circuit.
great video. Staring at that god forsaken rubber boot for days now and i could not figure out where my wire was going. However I didnt give up that easy, on my truck there is the BCM in front of it so I had to move it over and found that there is a split grommet in front of that boot under the drivers dash. I poked a solid wire as a fishtape through and found it right away.
Installing a light bar on my 2021 Chevy 2500. Can confirm that grommet/nipple is there in the same spot and accessible and where I am putting my wires through. I have to get a terminal tool first to remove the pins from the connector as the connector will not fit through, but once that comes in I should be able to push everything through.
It's a little bit tight , but I was able to get to my wires on the driver's side fairly easy. I ran my upfitter wires through the driver's side as the GM instructions say to.
On the driver’s side, you find your wire behind the carpet slightly right and above the steering column. There is a retaining washer holding the carpet to the firewall but it pulls off easy. I’ll make a video. It’s Actually easier to get to than the passenger side.
You have to remove or pull back some of the insulation: remove the star washer near where the steering column goes through the firewall. Wire will come through the rubber grommet just above and to the right of the steering column
This is the pro tip! Struggled for two hours to find the wire inside on driver's side. Looked where @stephenallen1087 suggested, and, bingo, saw my white hanger lead. Another hour and several contortions later, I was able to pull the stubborn thing through. Putting on controller in the engine bay that connects to the switch panel in the cab.
There is a way to connect to the terminal for the upfitter switches in the black box next to the battery. I am in the process of installing a train horn in my 2020.
I just tried this on my 2020 Silverado diesel using fish tape. IT appears there is another rubber layer stopping it. I tried to force it through but no dice. Not a log of room to get hands in there either.
I used that exact one on the drivers side, couldn’t find my wire either.... pulled out and taped wire to a 12” piece of home electrical wire (single piece, not the full 12/3) and put the wire through the wall and felt around for the wire, took time, but I found it and pulled the wires through. I’m all about no drilling either, but I had to drill my bumper for an led light at since there are NO light bar options available for these trucks for 2020 3500. Ps: I have a 2020 GMC Sierra 3500 and this video DOES apply to that model too.
The wire pokes through behind the foam that surrounds the steering shaft. It's not hard to find at all, and running to the driver's side is preferable for most applications.
Realizing this is a three year old video, I will make a simple comment. Yes, the rubber boot on the drivers side does open on the other side of the firewall. Best to push a wire clothes hanger through first. Second. IF you have the "baby" Duramax, it will be especially challenging to do this as the air intake tube runs right through this opening.
![TOP 5 Silverado MODs + 2 Bad Choices [2019-2024] Trail Boss Modifications](http://i.ytimg.com/vi/ZyVhp7ldrN4/mqdefault.jpg)
FYI!!! 2021 Silverado is the same! THANK YOU SIR! You deserve a medal.
Thank you so much for this video! I have been looking for a way to wire my switch box and could not figure out how to get through the firewall either. Thanks so much for posting this!!!
You sir, are my hero. I've spent 3 days looking for a way to route my wires for my off road lights. This video just saved me a huge pain in the butt. Thank You.
I’ve been searching for a video like this for WEEKS need to instal a 6swotch niilight rocker in the cab then figure out how to run wires from that to my chase rack lights.
So this video gets me half way there
Getting ready to run a wire into the cab of my 2021 Silverado RTS. This is very helpful! Thank you!
MVP right here !!! you're awesome.. i've been trying to find a way to get through that DAM firewall for a while now !!! thanks a million !!
Dude absolutely just saved me tons of time. And can confirm it will work on 2500 as well.
I appreciate you very much. Once I watched the video. It only took a few minutes to cut the boot and feed the wire though. I was able to snake the wire to the drivers side without any issues or pulling anything apart. Again, thanks for the video.
Dude. Thank you! Im finishing up wiring up a set of air horns tomorrow morning and THIS is now what I'm going to do. Was going to go through the antenna grommet but I like your way 100% more. Thanks again!!
I am so glad I ran across your video here. Fricken awesome. Thanks brother!
Thank you for posting this video! I wish I would have found it 2 hours earlier. I have a 2020 Silverado and your trick worked perfectly.
Thanks a lot Josh, Pushing my 4 gage power wire through tomorrow on my 19 new body , Made it way easier for me . Thumbs up.
Invaluable, this is what I was focusing on as well, you just confirmed it for me. Same exact setup for a 2020 GMC Sierra 1500 (which I have). Thanks Josh.
Thanks for troubleshooting this for everyone. Good job. Make sure you fill that hole with some type of sealant and take off that electrical tape
thanks bro! running rock lights and was stumped on the switch! you da man!
Bro just saved my life, thank you so much brother!
You just made my day I'm putting wheel lights on today this was my only question mark now I can do it thank you
This is exactly what I was looking for. Thank you captain!
Great video my friend. This will make installing my ham radio install so much easier...
Brother, this was TERRIFIC!!! I just bought a 2020 Silverado---I'm a ham radio operator and would like to install a portable VHF radio. The power lines on ham radio gear MUST connect to the battery, unlike CB gear that can plug into the lighter. Now I can route the power wires through the firewall. Thanks again!!
aaaaand this video just solved all my problems. Thank you sir. Hooked up power wires for CB radio and a speaker wire for a small PA speaker I installed under the hood. 2021 Chevy Trail Boss. This video applies to 2021 as well. Brilliant. Now if I can only figure out a good way of getting my antenna wire into the cab :)...
Jim Johnson did you figure a good way to run your antenna wire through. I'm working on the same thing now and looking for a good option. TIA
Same here
Also looking for a place to get the antenna wire through 🤔
It helped out alot! I was trying not to screw myself by making a hole somewhere I shouldn’t be. At first I was trying to use the hood release hole but apparently GM used a rubber fitting which is almost impossible withought breaking something.
This should work also for the 2020 Sierra Elevation?
I have a 2021 GMC Sierra 1500 crew cab and am looking at running power and antenna wire for ham radios. I have been planning on going through the firewall, but I have found access under the rear seat which I might run power there and antennas from the back and terminate it where the radios will live under the rear seats. I wish there were shop manuals to show the breakdown of OEM parts like what panels to remove and where cable access would be recommended. Anyway, thanks for your video, it was the way I originally intended to do this and still may depends on the trouble I cause for myself. Wish me luck!
Awesome. Just an fyi, I ran mine through the drivers side and it will pop out above the gas pedal. Look for a rubber circle roughly 6 inches wide. Hope this helps
This was excellent, worked on my 2020 2500HD Duramax. I ran into a similar problem on my 2017 GMC 1500 Denali and was really loathing the idea of having to do it again. I went through the drivers side on the Denali and it didn't even have that nifty nipple. It took maybe 5 minutes with 8 gauge power wire, most difficult part was getting in to cut the nipple, a little less room with the big diesel components in the way.
New subscriber here. Thanks for the video. I am trying to figure out routing wire in my Silverado for a Ham radio and antenna. This gives me an idea of what I am up against. Thanks for the video.
Good stuff man. Thanks for posting this
Thanks for the vid. Saved us a bunch of time!
This is a huge help! Thank you! Can you show how to connect those wires to the battery, please? Directly to the battery, and I’ve heard that there’s an available, fusable circuit int he fuse box. Where would I connect my wires for a 2-way radio? (Once they are routed through the firewall ‘the easy way’)
This is cool! But I have the Hybrid version of the LT and it has a electrical box where that is, but I have it going around through the door, fed it under the hood and it looks slick
I had to do the exact same thing to get a pwr wire through the f/w. I disconnect the box underneath the glove box just to give myself more room to work. if you disconnect that box thats mounted near the entry point where he ran his wire through the f/w, I suggest disconnecting the neg batter cable first. My question is how will you supply power to the aftermarket device you are installing? I could not find a switched fuse that would work for me, because it kept throwing the check engine light on. Therefore I had to run it straight off the battery and I put an on/off toggle switch on the circuit.
great video. Staring at that god forsaken rubber boot for days now and i could not figure out where my wire was going. However I didnt give up that easy, on my truck there is the BCM in front of it so I had to move it over and found that there is a split grommet in front of that boot under the drivers dash. I poked a solid wire as a fishtape through and found it right away.
Installing a light bar on my 2021 Chevy 2500. Can confirm that grommet/nipple is there in the same spot and accessible and where I am putting my wires through. I have to get a terminal tool first to remove the pins from the connector as the connector will not fit through, but once that comes in I should be able to push everything through.
How do I get some slack in the wiring going thru the fire wall mice chewed the wires going threw the firewall
Thank you thank you I expend all day yesterday trying to figure out how
Do you think it’s possible to run 2 gauge wire through because I need to run two of em to get to my inverter
I did it with my 2018 Silverado and then i ran them under the carpet and through the cab and into the bed through a vent.
Thank you very much! I was struggling to find the right route for the amp power cable on my 2020 trail boss.
Did you get it through? What do you think the biggest gauge you can get through there??
Appreciate the video. Was a big help.
Excelente trabajo, Me ahorraste muchos dolores de cabeza saludos. Thank you very much from Cali.
how many wires will fit through it? will 3 12 gauge wire fit
Yes. It’s like a half inch hole
Great job you made my day Thanks
It's a little bit tight , but I was able to get to my wires on the driver's side fairly easy. I ran my upfitter wires through the driver's side as the GM instructions say to.
My aux lights/amp appreciate this great video!!
On the driver’s side, you find your wire behind the carpet slightly right and above the steering column. There is a retaining washer holding the carpet to the firewall but it pulls off easy. I’ll make a video. It’s Actually easier to get to than the passenger side.
Did you ever make a video? I tried to find the wire using your description, but could not find it
You have to remove or pull back some of the insulation: remove the star washer near where the steering column goes through the firewall. Wire will come through the rubber grommet just above and to the right of the steering column
This is the pro tip! Struggled for two hours to find the wire inside on driver's side. Looked where @stephenallen1087 suggested, and, bingo, saw my white hanger lead. Another hour and several contortions later, I was able to pull the stubborn thing through. Putting on controller in the engine bay that connects to the switch panel in the cab.
There is a way to connect to the terminal for the upfitter switches in the black box next to the battery. I am in the process of installing a train horn in my 2020.
I just tried this on my 2020 Silverado diesel using fish tape. IT appears there is another rubber layer stopping it. I tried to force it through but no dice. Not a log of room to get hands in there either.
Gracias señor 👍 ..
No problemo
I used that exact one on the drivers side, couldn’t find my wire either.... pulled out and taped wire to a 12” piece of home electrical wire (single piece, not the full 12/3) and put the wire through the wall and felt around for the wire, took time, but I found it and pulled the wires through. I’m all about no drilling either, but I had to drill my bumper for an led light at since there are NO light bar options available for these trucks for 2020 3500.
Ps: I have a 2020 GMC Sierra 3500 and this video DOES apply to that model too.
Thanks man great tip
A lot of people have added a power wire thru the driver side grommet. Lots of videos on it. Now sure why you couldn't find.
How did you hook a amplifier to your radio without voiding the warranty?
Llj harness
Thanks man. This helps a lot
Thanks for this video!!! I have some wires and a coax to run through
The wire pokes through behind the foam that surrounds the steering shaft. It's not hard to find at all, and running to the driver's side is preferable for most applications.
Awesome! Thank you good sir!
2022 Silverado 1500 is also the same! Thanks!
dont see it on my 19 Silverado, but will look again tomorrow
Super helpful!!
Great video thanks
Same for a 2022 1500
I am one person this helped 👌🏽
2021 silverado thanks I'm installing a high power cb
2021 same way thank you sir
Without watching your video, can a 00 guage cable work With your hole in firewall? Be SPECIFIC
you saved the day!!
Thanks really help out a lot
Thanks!!!
we just use a 6" hole saw no problems and then seal it w flex seal
😂
Realizing this is a three year old video, I will make a simple comment. Yes, the rubber boot on the drivers side does open on the other side of the firewall. Best to push a wire clothes hanger through first. Second. IF you have the "baby" Duramax, it will be especially challenging to do this as the air intake tube runs right through this opening.
Thank you sir!
THANK YOU
hope this works on a 2022 Silverado
Bro thank you !
Thank you!
THANKS ;)
🙏🙏🙏
Not the same for the 2019. :(
Duhhhh, stereo wire? LOL A 00 GUAGE CABLE? There's A BIG DIFFERENCE BUT OT MANY PEEP THINK.
Ford F150 is better on the driver side
Thank you!