How to run wires through the firewall, 2015 Colorado - Chevy Colorado & GMC Canyon
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post #1 of 24 (permalink) Old 09-06-2015, 09:32 PM Thread Starter
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How to run wires through the firewall, 2015 Colorado

This is just a simple "how to", just to show people where to run wires from the engine bay through the fire wall.

1) In the engine bay, on the firewall, between the engine and the brake fluid reservoir is the grommet where you want to cut into:


2) Using your knife, just slice straight through, all the way into the cabin area, and then just run the wire(s) through your slit:


3) The wire(s) will come into the cabin through the fire wall between the gas and brake pedal:


4) You can then run the wire wherever you need to for whatever accessories you are wiring up.

2015 Laser Blue Colorado LT
CC, 4X4, V6, SB

Mods:
LED light bar - 32"
HID headlights
LED fog lights
LED high beams
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LED license plate lights
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LED dome lights
LED switchback front turn signal lights
LED cargo light turn signal conversion
LED bed lights
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post #2 of 24 (permalink) Old 09-06-2015, 09:59 PM
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Thanks, I still haven't had time to poke under the hood.
Shot in the dark, the inside fuse box has some empty slots according to the manual... Would you know if any of them are hot, preferably ignition switch ?
Would make it that much easier so some light weight power demands, I still have to get to my footwell lights.
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post #3 of 24 (permalink) Old 09-06-2015, 10:03 PM
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Thats pretty much the same spot used in my 2005 Colorado. Nice to see they still haven't taken that spot away.

Wouldn't hurt to mention.....dab some RTV silicone after your all done to keep moisture out of the cab.

And, finally got the ok from my dealer that my truck got ordered....the waiting begins.
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post #4 of 24 (permalink) Old 09-06-2015, 10:05 PM Thread Starter
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Quote:
Originally Posted by Xcanuk View Post
Thanks, I still haven't had time to poke under the hood.
Shot in the dark, the inside fuse box has some empty slots according to the manual... Would you know if any of them are hot, preferably ignition switch ?
Would make it that much easier so some light weight power demands, I still have to get to my footwell lights.
I actually used a slot in the fuse block for the power on my light bar. I can get a picture later tonight when I head out for the night.

2015 Laser Blue Colorado LT
CC, 4X4, V6, SB

Mods:
LED light bar - 32"
HID headlights
LED fog lights
LED high beams
LED reverse lights
LED license plate lights
LED visor lights
LED dome lights
LED switchback front turn signal lights
LED cargo light turn signal conversion
LED bed lights
LED tail lights
LED sidemarkers
Canyon swapped tail lights
Red painted calipers
Supermod ported throttle body
Silver metallic rally stripes
Super Skidz skid plate
Volant CAI

Have a Colorado but want Canyon tail lights? Or vice versa CLICK HERE

***NOTE***
SITE RULES

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post #5 of 24 (permalink) Old 09-06-2015, 10:14 PM
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Good info! Thanks! I used the grommet for the hood latch cable to run the power wire for my amp. It's not ideal, as I had to pull the grommet out and leave the power wire susceptible to shearing on the firewall.... I'll keep this spot in mind for next time, or if I choose to reroute.

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post #6 of 24 (permalink) Old 09-06-2015, 11:19 PM
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Very Helpful! Thanks!

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post #7 of 24 (permalink) Old 09-06-2015, 11:20 PM
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A better place as long as you do not have a standard transmission is to use the spot where the clutch pedal would mount. I was able to drill a small hole for a power wire to my Kicker HS8 powered sub - used a small rubber grommet and then some sealant to make sure no leaks and no chaffing. There is plenty of room for larger wires if necessary. Again, this is only for automatics. By the way, I put the foam cutout piece back after I took these pics.
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post #8 of 24 (permalink) Old 10-27-2015, 07:11 PM
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Best place to run wire from battery to interior

Will need to run two separate power wires (10ga.) from battery to rear seating area in 2015 Colorado Crew Cab Z71. Is there a good spot on driver's side? I have given a quick look inside cab and engine compartment, but haven't seen any obvious ports....

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post #9 of 24 (permalink) Old 10-27-2015, 07:53 PM
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If anybody knows of the threads that address running the wires through the firewall please share.
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post #10 of 24 (permalink) Old 10-27-2015, 09:03 PM
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got it, thanks...

http://coloradofans.com/forums/201-2...-colorado.html

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post #11 of 24 (permalink) Old 10-27-2015, 10:02 PM
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hahahaha awesome!
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post #12 of 24 (permalink) Old 12-29-2015, 05:08 PM
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Thanks for the info, just ran my 4 gauge power wire. Since my amps will be in back I used a bolt under the seat for ground wire.

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post #13 of 24 (permalink) Old 12-29-2015, 05:23 PM
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jot1teg, nice find. That's the spot I am going to use now that I see where you are talking about. Perfect to drill and place my 4AWG firewall bushing, cable. Thanks!
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post #14 of 24 (permalink) Old 12-29-2015, 08:26 PM
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post #15 of 24 (permalink) Old 01-20-2016, 03:38 PM
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Not bad. I used The Same location and Gromit as the hood release cable For my small accessory power wires. I've been looking forward to installing an amp and sub And was hoping I could get my amp wire through there as well but I'll try your spot.

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post #16 of 24 (permalink) Old 05-17-2016, 04:17 PM
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How are you guys connecting the positive wires to the battery?

I ran my 4 gauge amp wire through the firewall, but when I thought all I had left to do was unscrew the positive terminal nut, put the wire on then tighten the nut.... I realized the nut doesn't seem to come completely off, just loosens...

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post #17 of 24 (permalink) Old 05-17-2016, 04:53 PM Thread Starter
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The accessory fuse positions in front of the fuse block
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2015 Laser Blue Colorado LT
CC, 4X4, V6, SB

Mods:
LED light bar - 32"
HID headlights
LED fog lights
LED high beams
LED reverse lights
LED license plate lights
LED visor lights
LED dome lights
LED switchback front turn signal lights
LED cargo light turn signal conversion
LED bed lights
LED tail lights
LED sidemarkers
Canyon swapped tail lights
Red painted calipers
Supermod ported throttle body
Silver metallic rally stripes
Super Skidz skid plate
Volant CAI

Have a Colorado but want Canyon tail lights? Or vice versa CLICK HERE

***NOTE***
SITE RULES

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post #18 of 24 (permalink) Old 05-24-2016, 09:17 PM
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Where did you end up putting the ground??

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post #19 of 24 (permalink) Old 05-24-2016, 09:45 PM Thread Starter
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The grounding screw
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2015 Laser Blue Colorado LT
CC, 4X4, V6, SB

Mods:
LED light bar - 32"
HID headlights
LED fog lights
LED high beams
LED reverse lights
LED license plate lights
LED visor lights
LED dome lights
LED switchback front turn signal lights
LED cargo light turn signal conversion
LED bed lights
LED tail lights
LED sidemarkers
Canyon swapped tail lights
Red painted calipers
Supermod ported throttle body
Silver metallic rally stripes
Super Skidz skid plate
Volant CAI

Have a Colorado but want Canyon tail lights? Or vice versa CLICK HERE

***NOTE***
SITE RULES

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post #20 of 24 (permalink) Old 05-24-2016, 10:43 PM
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I found that right after the post. Thanks!!
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2016 Chevrolet Colorado Z71 4x4 Deisel CCSB
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1967 Chevrolet Caprice Hard Top 4 Door 350V8
Mods: Edelbrock Intake, Carb, Aircleaner, Hooker Headers, Magnaflow Super 40s

1980 Yamaha XS850 Midnight Special
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