4-Flat tester verifies taillight, right turn, and left turn functions.
The TowSmart 4-Way LED Light Tester is the quickest and easiest way to test 4-way flat trailer plugs on towing vehicles. Simply plug the light tester into your tow vehicle and the LED lights will illuminate to ensure all functions are working properly. The small compact design allows you to easily store in small spaces such as your glove compartment or pocket.
TowSmart 4-Way LED Trailer Light Tester
T-H Marine Trailer Circuit Tester
4 Way Flat Trailer Wiring Tester Light Brake Tail Turn Signal Trouble Shooter Plugs Into The Connector Of The Tow Vehicle - AliExpress
4-Way Trailer Light Tester. Fits four-way flat trailer plugs. Test left, right, tail and brake lights for proper function. Small size is easy for
LED 4 Way Flat Tow Trailer Light Wiring Circuit Tester Checker Brake Turn Tail
Hopkins Electronic Trailer Wiring Test Er 4-Way Flat - 48655 - Speed Addicts
4-Way Flat Trailer Wiring Tester [Nickel-Plated Copper Terminals] [Male & Female] [Continuity Test] 4-Pin Trailer Light Wire Circuit Tester
Oyviny 4-Way Flat Trailer Wiring Tester 4 Pin Male and Female Trailer Tester with Bright Indicators, Double End Design 4 Pin Trailer Light Tester for Turn Signal Tail Lights Trouble Shooter : Automotive
4 Way Flat Trailer Wiring Tester Light Brake Tail Turn Signal Trouble Shooter Plugs Into The Connector Of The Tow Vehicle - AliExpress
Fits four-way flat trailer plugs. Test left, right, tail, and brake lights for proper function. Credit Card.
4 Way Trailer Light Tester Circuit Functions Brake signal Trailer Plug Tester
