7-Way RV Trailer Connector Wiring Diagram | etrailer 7-Way RV Trailer Connector Wiring Diagram. Question: trailer connector wireing diagram. need to know which color wire go to which post. Expert Reply: When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it.Wiring · Trailer Parts 7 Blade Wiring Diagram | etrailer 7-Way round plug lets you connect your trailer to the 7-way round blade connector of your tow vehicle. Interlock system keeps connections in place. Interlock system keeps connections in place. Over-sized finger grips for secure disconnections.
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