7-Way Trailer Light Tester Circuit Functions Brake signal LED Truck NEW
Tests 6 separate trailer light functions: turn, brake, tail, stop, reverse, and 12V. Easy and quick to test trailer circuits on most trucks. Bright LED indicator lights.
Tests 6 separate trailer light functions: turn, brake, tail, stop, reverse, and 12V. Easy and quick to test trailer circuits on most trucks. Bright LED indicator lights.