7 Pin Trailer Lead. I have hooked up a trailer light and it works manually, but I have not been able to get it to come on automatically. Here's the wiring diagrams showing the pin out for the plug and socket for the most common circle and rectangle trailer connections in use in Australia.
Anyone have a diagram of which pins supply which functions?
This adapter is built to last by featuring a heavy-duty.
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I want to add a wire for backup lights on the trailer. If I remember right I had to run the trailer brake wire and the power to trailer battery wire. Trailer Wiring Diagrams showing you the typical wiring for most single axle trailer and tandem axle trailers.