TAP Tow Doctor Trailer Side Test Unit

Designed for one person to test trailers for correct wiring and proper working order of turn, brake, tail and backup lights, as well as electric brake and auxiliary power. Trailer lights illuminate along with LED light on tester to show operation. Adapts to 4-way flat and 6- or 7-way RV blade round. Includes battery terminal clips for use with any 12V battery. Amperage meter indicates actual amperage draw. Magnets are activated to test correct electric brake operation. Unit is completely short#&150;circuit proof. U.S.A. 4-Way Flat Capable: Yes, 6-Way Round Capable: Yes, 7-Way Round Capable: Yes, Tests Turn Lights: Yes, Tests Brake Lights: Yes, Tests Tail Lights: Yes, Tests Back-Up Lights: Yes, Tests Ground Wire: Yes, Tests Brake Controller: Yes, Tests Auxiliary Power: Yes