1989 Gmc 7 Pin Trailer Wiring Diagram. I found a diagram on the web (see attached), but can't tell if the diagram is from the front or rear of the connector - ie if you unplugged it at looked at the side that mates with. Not sure which wires attach to what on your trailer connectors?
Each component ought to be set and connected.
The wiring diagram is color coded and shows both the trailer side and the vehicle side.
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Does one of your turn signals not work and you're not sure Various styles of connectors are available with four to seven pins to allow transfer of power for the lighting as well as auxiliary functions such as electric. Not sure which wires attach to what on your trailer connectors? Need to replace a corroded or damaged Trailer Hitch Plug on your GMC Safari model?