How to Determine Trailer Wiring Functions on a Travel Trailer for 7-Way Replacement
Updated 05/21/2015 | Published 05/19/2015
Question:
Have casitta trailer,2008Silverado. Could you tell Me which colors represent what function?having some difficulty
asked by: Rick Y
Expert Reply:
Trailer wiring color codes can vary greatly so I have a solution for you, but I can't tell you which color wire goes where on your trailer for wiring up a new 7-way. However, you may look around the wiring junction box or pin box of your trailer. There may be a diagram there.
Instead you will want to use a jumper wire from a 12 volt source like a vehicle battery to apply voltage to all of the wires of your trailer wiring to see what activates. It can help to use masking tape to label them as you go.
For the # 50-67-106 that you referenced the wiring goes:
Yellow: center auxiliary
Green: tail and license lights
Brown: right turn and stop lights
Blue: electric brake
Black: battery charge
Red: left turn and stop lights
White: ground wire
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Shop: Mighty Cord Trailer Connector Adapter - 4-Way Flat to 7-Way RV Style - 12" Long
- Article: Trailer Wiring Diagrams
- Shop: TowSmart ProClass Plug-In Trailer Connector Adapter w Wire Tester, Ergo Grip - 4-Way Flat to 7-Blade
- Q&A: Troubleshooting Blown Vehicle Fuses Every Time Trailer is Connected
- Video: In-Depth Review of the Mighty Cord Trailer Connector Adapter
- Video: What to Know About the Mighty Cord Trailer Connector Adapter
- Shop: Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 7' Long
- Shop: Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End
- Shop: Replacement Inlet Cap and Strap for Valterra RV Waste Valve Cap - 3/4" Thread - Black
- Shop: B&B RV Sewer Cap - Black
- Q&A: Both Trailer Turn Signals Blink at the Same Time
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Video: Optronics RV Interior Lights Talks Lighting Choices
- Shop: Hook Probe Circuit Tester
- Video: Optronics 12V RV Dome Light Review
- Video: The Low-Down on the Optronics 12V RV Dome Light
- Shop: RV Exterior Lighting
- Shop: RV Interior Lighting
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: How to Choose a Trailer Brake Controller
- Shop: Suspension Enhancement
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
on Trailer Wiring
