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
- Search Results: brake switch
- Search Results: curt 56407
- Search Results: charge line
- Search Results: demco stay~in~play
- Shop: Brake Controller
- Shop: Trailer Hitch
- Search Results: trike bike rack
- Shop: Detail K2 Mighty Multi A-Frame Utility Trailer - 7-1/2' Long - 1,640 lbs
- Shop: Trailer Wiring
- Shop: B&W Patriot 5th Wheel Trailer Hitch w/ Slider for Ford Super Duty - Dual Jaw - 18,000 lbs
- 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
- Shop: WFCO Auto Detect RV Converter and AC/DC Distribution Panel - 12V - 55 Amp
- Q&A: How Does Brake Controller Install in 2018 Chevy Colorado
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2"
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2"
- 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
- Q&A: Does The Negative Battery Cable On a 2018 Chevrolet Colorado Need To Be Disconnect While In Tow
- Q&A: How is the Brake Buddy Powered if Battery is Disconnected?
- Search Results: flat tow wiring harness
- Search Results: vehicle tow bar wiring
- Shop: Vehicle Tow Bar Wiring
- Video: How to Install the RoadMaster 6-Wire Trailer Connector on a 2007 GMC Sierra New Body
- Video: Best 2018 Chevrolet Colorado Trailer Wiring Options
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!