Tests trailer circuits quickly and easily on most light and medium-duty trucks and campers.
Plugs into vehicle-side socket.
LEDs indicate that each circuit is working...
Test tow circuits from vehicle's 6-way round connector to verify proper lighting and brake operation.
Easy to use.
Quickly and accurately tests 6-way pin trailer circuits...
Test, clean and restore 4/5 pin trailer connections .
Extends harness life.
Great preventative maintenance tool...
Test, clean and restore 7 round pin connections.
Tests tractor electrical circuits.
Removes corrosion from truck and trailer connectors...
Tests light circuits: cleans and restores male/female pins.
Quickly tests light circuits; cleans and repairs truck and trailer connectors.
Extends harness life...
Test light signals coming from tow vehicles with 4/5 flat connectors .
Only requires one person to trace each lighting function to the terminal in question.
Plugs into trailer plug...