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...
For commercial truck and trailer connectors.
For male and female 7 round pin truck/trailer connections.
Maintains continuity and prevents circuit failure...
Test light signals coming from tow vehicles with 4/5 flat connectors.
Allows one man to trace each lighting function to the terminal in question.
Plugs into trailer plug...
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...