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7 Pin HD Plug Wiring Diagram

Towing any trailer requires both a physical and electrical connection between towing vehicle and trailer. Smaller trailers only require power and control for basic functions like lights and turn signals. Larger vehicles, however, need extra controls for functions like reverse lights and electric trailer brakes.

A 7 pin plug or connector is required for larger trailer towing, and these connectors provide the necessary power and controls If opting to install the connector yourself, we have provided a handy diagram in the document to the right.

Download and open, then browse our selection of wiring adapters for truck, trailer and farm equipment.