Helping Wire Up Trailer 7-Way with Non-Standard Color Codes
Question:
I am confused with the color codes. I purchased Hopkins 7 blade model 48510. My travel trailer is 1964 Shasta and has 6 wirings. These colors are Red, White, Black, Green, Yellow and Brown do not have blue. On Hopkins wire identification indicates GD, LT, T/M, BU, AX, RT, and EB. So do you know which color goes to these code?
asked by: Daniel
Expert Reply:
While there are two generally accepted color codes used on 7-ways both of them use the color blue for the brake output so you most likely have wiring that is just not a standard we can give you an easy answer for. That said it sounds like you have closer to the RV standard since you have a red wire. Normally that would go:
Green for taillight
Black for 12 volt power
Brown for right turn/stop
Blue for brake output from controller
White for ground
Red for left stop/turn
Yellow for reverse lights
I'd use a jumper cable from a 12 volt car battery positive post to test each of the pins to see which circuit lights up and that would tell you exactly what you have.
I also linked an article on trailer wiring that has diagrams and other helpful info for you to check out as well.
Product Page this Question was Asked From
Hopkins 7-Way Blade Style Connector with Molded Cable - Trailer End - 8' Long - Auto Standard
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 6 - 10 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Video: Diamond Trailer Lights - Clearance Lights - DG52443VP Review
- Video: Optronics Ultra Thin Line LED Trailer Light Bar Review
- Search Results: jack replacement parts
- Search Results: fender marker lights
- Search Results: jack handle
- Shop: Replacement Handle for Top Wind Style Trailer Jacks by Dutton-Lainson
- Shop: Optronics LED Trailer Clearance or Side Marker Light w/ Reflector - 6 Diodes - Rectangle - Red Lens
- Shop: Hopkins 7-Way Blade Style Connector with Molded Cable - Trailer End - 8' Long - Auto Standard
- Shop: LED Trailer Fender Clearance Light - Weatherproof - 2 Diodes - Amber/Red Lens - Passenger Side
- Shop: LED Trailer Fender Clearance Light - Submersible - 2 Diodes - Amber/Red - Driver or Passenger Side
- Q&A: Junction Box Terminal Post Size for Part # 3375601100
- Q&A: Comparing Trailer Wiring Junction Box 3375601100 and Trailer Wiring Junction Box 38656
- Search Results: trailer jack replacement handle
- Q&A: Replacement Trailer Fender Clearance Light
- Q&A: Replacement LED Trailer Tail Light Measuring 15 by 1-3/8 Inches with 14-1/8 Inch Mounting Holes
- Q&A: Can 12V Auxiliary Wire on Trailer 7-Way Be Used To Power Trailer Brakes
- Shop: Trailer Wiring Junction Box - 7 Terminals - Polypropylene
- Shop: Pollak 7-Circuit-Breaker Junction Box
- Article: Trailer Wiring Diagrams
- Shop: Trailer Wiring
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer lights
- Video: Choosing the Right Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Search Results: junction box
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer jack