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The REESE Towpower 4-wire flat professional series Insta-plug kit is designed to make wiring a 4-way flat trailer connector a very simple process. Simply load the wires into the connector, close the cover, and screw it down and you are ready to use the 4-way flat connector. It features cool blue LED indicator lights to test the trailer end circuit.
Allows for quick repair of damaged four-wire flat
No external corrosion points
Installs in minutes