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: Brake Controller
- 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: Trailer Wiring
- Shop: Replacement 2" Receiver Attachment for Stealth Hitches
- Shop: Trailer Hitch
- Shop: TowSmart Multi-Tow 7-Way Blade and 4-Way Flat Trailer Connection - Ford/GMC/Dodge
- Shop: RV Plug Adapters
- Shop: Camco Power Grip RV Power Cord Adapter Plug - 125V - 30 Amp Female to 15 Amp Male
- Shop: Go Power PWM Solar Charge Controller with USB Port - LCD Digital Display - 10 Amp - 12V
- Video: Best 2019 Chevrolet Colorado Trailer Hitch Options
- Video: Stealth Hitches Replacement Receiver Attachment Review
- Video: Review of Curt Towed Battery Disconnect - RVI67FR
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Shop: Blue Ox Trailer Hitch Receiver - Custom Fit - Class IV - 2"
- Search Results: flat tow wiring harness
- Search Results: vehicle tow bar wiring
- Search Results: accessories and parts
- Search Results: trailer wiring
- 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: brk2022
- Search Results: roadmaster battery disconnect
- Search Results: base plate for tow bar
- 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
- Article: Flat Towing Package for 2015-2018 Chevrolet Colorado and GMC Canyon
- Shop: Vehicle Tow Bar Brake System
- Shop: Base Plate for Tow Bar
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!