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4-Way Trailer Connector that has 5 Wires

Question:

The dog chewed up the flat connector on my trailer which has five wires, white, green, yellow, brown, and black. I bought a four wire flat connector at Autozone, for the trailer, but only offers a four wire connection. Do you run two of the five wires into one connection position, and if so, which ones? Or, does the black wire even need to be connected?

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Helpful Expert Reply:

Did you have a 4-pin connector that had 5 wires or was it a 5-pin connector? There is a big difference since you normally see a 5-pin connector on a boat trailer with the 5th pin used for an electric reverse lockout solenoid on a brake actuating coupler. If it was a 4-pin connector with 5 wires then it is called a wishbone harness and would have 2 wires attached to the running light pin so you have one wire for each side of the trailer.

Typically, on a 4-Way, the white wire is ground, brown is running lights, yellow is left turn/brake lights, and green is right turn and brake lights. A 5-Way will have the same functions but then usually a blue wire at the end for that electric reverse lockout I mentioned.

On a wishbone 4-Way you would have a ground wire and then you usually see a brown wire with yellow stripe for the left side running lights and a brown wire with green stripe for the right side running lights. They are attached to the same pin. All of the other functions are the same.

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