Sturdy 4-Way Trailer Wiring Tester with LED Lights – Plug & Play Convenience
Experience plug & play convenience with our advanced 4-way trailer tester. A must-have for safety-conscious drivers! Sturdy 4-Way Trailer Wiring Tester with LED Lights. Plug & Play: Simply insert the tester into the 4-pin connector; operate your trailer’s lights, and observe the LED indicators.