This machine is {an electrical} diagnostic software used to guage the performance of the connection between a automobile and a trailer. It checks the integrity of the seven-pin connector, verifying that every circuit supplies the proper sign for lighting, brakes, and auxiliary energy. As an example, a unit can verify if the left flip sign on the trailer is receiving energy from the tow automobile’s corresponding pin.
Efficient use of such a software ensures protected and authorized towing operations. Functioning trailer lights and brakes are crucial for visibility and management, notably throughout inclement climate or at evening. Common testing can determine wiring faults, stopping potential accidents and dear repairs. This expertise has developed from easy continuity testers to extra refined items that may simulate load circumstances, offering a extra correct evaluation of {the electrical} system.