This trailer plug adapts OEM7 way blade connectors
to either basic 4 way or 5 way flat connectors. Tester instantly checks electrical circuit and displays connectivity using blue LED lights. Built in dust cover snaps closed.
Fulton Powered Trailer Tail Light Converter With Circuit
Powered trailer tail light converter draws power directly
from vehicles battery and uses less than 5 mA. Can be used on 2 or 3 wire system. Works with most LED and incandescent bulbs. Includes integrated protective cover.