6 pole RV Trailer Light Plug Circuit Tester for trucks
This is a tester for the trailer light plug.
Analyzes tail light, turn signal and ground connections and
confirms them with bright LEDs
Checks conductivity of all circuits, Quickly identify lighting problems.
Test the plug before you drive to the repair shop and have them tell you that the fuse is blown in your truck and then have them charge you 30.00 to 40.00 for the service.
Will test the following lights:
LT + Left Turn
RT = Right Turn