Installing A 7-Way Trailer Wiring Harness On A 2018 Chevy Colorado.
Updated 08/22/2024 | Published 09/14/2021
Question:
I was trying to use your DIY video to install a 7 way wiring harness on my 2018 Chevy colorado. But I have a Delphi harness, not the one sold on etrailer. My harness has brown, yellow, white, black, green, blue, and purple. Can you tell me how to hook it up to my trucks wiring, which is brown, yellow, black, orange, green, Grey, and blue?
asked by: Jim F
Expert Reply:
I found a wire coloring for your 2018 Chevy Colorado on a Chevrolet forum it should be wired as such. Yellow: Left stop/turn signal, Green: Right stop/turn signal, Brown: Tail lamps/parking lamps, Black: Ground, Grey: Back-up lamps, Orange: Battery, Blue: Trailer brake. Even with that info it's a good idea to use a circuit tester like part # PTW2993 to test each wire for function.
The trailer wiring code is probably Yellow: Left turn, Green: Right turn, Brown: Taillights, Black: Battery, White: Ground, Blue: Brakes, Purple: Backup lamps. Since we do not carry the harness you have, I can't say for sure, but this is the traditional wire coloring.
So, if all is correct you should connect: yellow to yellow, green to green, brown to brown, black to white, orange to black, blue to blue and purple to grey.
Make sure you test all connections to verify that the wires are connected and operating properly and all
lights are correctly illuminated.
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Hitch
- Shop: Brake Controller
- Search Results: demco stay~in~play
- Search Results: brake switch
- Search Results: charge line
- Search Results: curt 56407
- Shop: Detail K2 Mighty Multi A-Frame Utility Trailer - 7-1/2' Long - 1,640 lbs
- Search Results: trike bike rack
- Shop: Trailer Wiring
- Shop: B&W Patriot 5th Wheel Trailer Hitch w/ Slider for Ford Super Duty - Dual Jaw - 18,000 lbs
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Video: Installing the Redarc Tow-Pro Liberty Brake Controller in a 2019 Chevrolet Express Van
- Shop: Suspension Enhancement
- Shop: Fifth Wheel Hitch
- Q&A: How Does Brake Controller Install in 2018 Chevy Colorado
- Shop: WFCO Auto Detect RV Converter and AC/DC Distribution Panel - 12V - 55 Amp
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional
- Shop: etrailer Adjustable 2-Ball Mount - 2" Hitch - 6" Rise, 6" Drop - 10K
- Video: Lets Go Aero TriQuad Bike RackTest Fit - 2022 Ford F-150
- Video: Stealth Hitches Replacement Receiver Attachment Review
- Video: Best 2019 Chevrolet Colorado Trailer Hitch Options
- Video: Review of Curt Towed Battery Disconnect - RVI67FR
- Q&A: How is the Brake Buddy Powered if Battery is Disconnected?
- Q&A: Does The Negative Battery Cable On a 2018 Chevrolet Colorado Need To Be Disconnect While In Tow
- Search Results: trailer wiring
- Search Results: accessories and parts
- Q&A: Should Brake Output Pin of 7-Way Have Voltage When Brakes are Applied without Trailer
- Q&A: How to Test Brake Controller without Trailer Connected
on Automotive Tools
James S.
8/22/2024
I dont about Jim F the original questioner. But this was VERY helpful. I could not find a video anywhere Or written materials either. Followed the color matches you provided. And boom trailer hooked up and all lights working. Took me longer to text this message than to do the install! Lol Thanx for great info!