Determining Which Wire of Vehicle 7-Way is The Reverse Light Circuit
Updated 11/03/2025 | Published 01/13/2025
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Question:
I have a pollack PA66-MD40 7 pin plug and Im trying to determine which lead is malfunctioning. I dont know what color wire powers back up lights. Can you help me identify. Thank 6ou
asked by: Mark
Expert Reply:
Hey Mark, so the most reliable way to help is to let you know that the reverse light circuit of a 7-way is going to be the center pin. The color can be yellow or purple for that circuit but it honestly can be any color since when people install 7-ways they don't always have the right colors on hand.
Let me know if that's helpful. Other possible way to find it would be to use a circuit tester like the # PTW2993 to probe all of the wires.
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Product Page this Question was Asked From
Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket for Dodge/Chrysler
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- No Tow Package
- 7 Blade
- Plug and Lead
- Plug-In
- Pollak
more information >
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Jameson C.
11/3/2025
Hey Mark, how did it go testing the wires on your Pollak 7-pin plug with the circuit tester? Knowing which lead ended up powering your backup lights could help others tracing wiring issues too.