LED Trailer Wiring 4 Way Flat Circuit Tester Turn Tail & Brake Light Tester
Test your turn signals, tail lights, brake lights.
Plugs in between your tow vehicle and your trailer for easy trouble shooting of your trailer lights.
Compact and can fit easily in your pocket
Plug tester into vehicles 4-way flat towing plug. Operate vehicles turn signals: lights and brakes. When power is present: that circuits green light will glow. Waterproof PVC material