Electrical Adapter (4-Way Flat Vehicle to 7-Way RV Blade Trailer)
Adapts a 4-way flat vehicle socket to fit 7-way RV blade trailer plugs
7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
Spring-loaded dust cover keeps connector clean when not in use
Slit loom keeps wires contained and well protected
Notes:

Some manual wiring required