7-Way round Pin Trailer Truck Circuit Plug Tester Replace 7865L, Trailer Tractor Light Tester for Testing Turn Signals

Note: Please check your truck before buying, there are two types of circuit testers,

round pin and flat blade, ours is round pin connectorFeature:

7-Way Round Pin Trailer Truck Circuit Plug Tester Replace 7865L, Trailer Tractor Light Tester for Testing Turn Signals, Hazard Lights, Brake Lights ,clearance, tail tags, or ABS circuits and More

Connect the circuit plug tester to the electrical connector, and by operating the function switches, the LED indicator will show the condition of each circuit, clearly and accurately reflecting the problem.

Effective at testing output from the tractor. Note this is designed for tractor trailers and not passenger truck 7-way pins as there are different pin styles and will not fit.

The best tool for checking trailer plugs and/or light cords. Quick and easy diagnostics.Worked great for testing semi tractor and trailer pins.

This it’s excellent tool for owner operator that switch daily Chassis intermodal , you get to diagnose the problem ASAP light or cable or connector. Really dependable and reliable something that you must have in your toolbox

This makes quick and easy work of checking semi trailer light cord (7-way) cables. Easy to not only check the operation of the lights but the condition of the pins inside the connector, I use it every time I perform a federal inspection on a customer unit.

Check light cord and 7 way plug on trailer Worked great for testing semi tractor and trailer pins.