Adding 7-Way to Trailer with Yellow Wire Instead of Purple
Question:
I have green brown white yellow blue red and black no purple so considering your diagram which would take place of purple since i do t have that color? Thanks
asked by: Eddie B
Expert Reply:
Most likely the yellow wire on your trailer is what carries the reverse or auxiliary power circuit and would be connected to the center pin of the 7-Way like # PK12706. This would line up with standard 7-Way wiring for a 5th wheel or travel trailer. I have attached an image to assist.
With that being said it's still a good idea to test the wires for function as it's very possible a previous owner or even the manufacturer could have used non-standard color wiring. You can apply 12V power to each of the wires you mentioned to see what function on the trailer they activate.
Product Page this Question was Asked From
Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- Plug Only
- 7 Round - Blade
- Pollak
more information >
Continue Researching
- Shop: etrailer Horizontal E Track - Black Powder Coated Steel - 2,000 lbs - 94" Long - Qty 4
- Video: Review of etrailer E Track - E-Track Rails 4 Pack - e42VR
- Search Results: trailer tongue lock
- Shop: Floor Mats
- Shop: etrailer Cargo Area Protector - 48" Wide - 3 Piece - Black
- Shop: Erickson Vertical E Track - Zinc Plated Steel - 2,000 lbs - 4' Long - Qty 1
- Video: Spectro Trailer Wiring Junction Box Installation
- Search Results: trailer hitch lock
- Search Results: trailer locks
- Shop: Flint Hill Goods Wheel Chock w/ Handle - Solid Rubber
- Shop: Trailer Wiring Junction Box
- Shop: Junction Box and Installation Kit for Autowbrake Trailer-Mounted Electric Brake Controller
- Shop: Pollak 10-Terminal Junction Box
- Search Results: trailer lights
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Q&A: What Do Abbreviations EB and XL Mean on Trailer 7-Way
- Q&A: Do Trailer Breakaway Kits Have Diodes to Prevent Backfeeding
- Q&A: Spindle Dimensions of a 3500 lb Axle
- Shop: Trailer Wiring
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Shop: Front Mount Hitch
- Video: Hopkins 7-Way Blade Style Connector Review
- Q&A: Green and Yellow Wires on Trailer Wiring Harness do Not Show Any Power
- Video: Ventline RV Vents and Fans - Roof Vent - V3092-601-00 Review
- Q&A: How to Tell if Trailer Has 6-Way or 7-Way Installed
- Q&A: What is the Inner Diameter of Trailer Bearings L44649 and L68149
- Video: Choosing the Right Trailer Wiring
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
on Trailer Wiring
