What is the Function of the Yellow/Brown Wire on a Trailer
Question:
Have as ram 2013 with factory tow wiring 7 pin rv and 4 pin rd.Trailer was wired with 7 pin but only had 4 wire hooked up. yellow / brown wire to left turn brake .green /brown to right turn and brake lights. white to ground.So I installed my trailer brakes and grounded one wire to the frame ,run the blue wire up to the new 7 pin connector,The trailer green/brown and yellow /brown wires come up from the rear and tie into the side running lights using the the green / brown wire only. Running to the trailer connector7blade curt non sae which plugs into to the truck will be the yellow brown and well as the yellow wire. At the new connector the blue goes to the blue,trailer brakeswhite to white ground green/brown to the brown running lights. yellow to right turn signal and green to left turn signal ..Where the Hell is the yellow/brown supposed to go? The right turn signal or the brown running lights?
asked by: Gene
Expert Reply:
Your yellow/brown wire most likely ties into the brown running light wire. Typically, when a trailer has a green/brown wire and a yellow/brown wire, they are both used for the running light circuit. The green/brown wire is ran down the right side of the trailer and the yellow/brown wire is ran down the left side of the trailer for the tail lights and marker lights. This prevents the need from running jumper wires across the trailer for the running lights. If your trailer is setup this way, you can tie the yellow/brown wire into the green/brown wire or the brown wire at the trailer connector.
Product Page this Question was Asked From
Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 6 - 10 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
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Nora C.
2/18/2024
I am trying to connect a homemade trailer to a 7-pin control box. I have a brown/yellow and a brown/green and another brown wire. I tried attaching the b/g to the right turn/stop (brown on the 7 pin controller) and the y/b to the left turn/stop (red on the 7 pin control box). This does nothing, no power to anything. And then what is this extra brown wire for?