PART NO.:0150001The tow vehicle circuit tester is used to check if 12V power from the tow vehicle is reaching the trailer’s tow plug. This tester also indicates if the vehicle’s tow circuit is properly configured.
EASY TO USEPlug tester into tow vehicle’s towing plug
Operate vehicle’s turn signals,lights and brakes
When power is present,the tester’s green LED will grow
TESTER KEYIf leds are dim or flicker,check for loose or corroded ground wire
To test the tester,use 12v batter charger to determine if leds power up (Notes: on 4-way flat plugs only the lt,tm and rt leds will function.)