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  • Electrical Testers - Learn More

Electrical Testers - Learn More

Part of towing responsibly is making sure your trailer lights are working properly. Whether you have just installed a new custom wiring harness or are trying to locate the cause of an electrical problem, CURT electrical testers allow you to test the taillights, turn signals, brake lights and other electrical components on your vehicle, through the trailer wiring connector.

A trailer wiring tester works by plugging into the connector socket on your vehicle and responding to the various electrical signals produced by pushing the brake pedal, signaling a turn, turning on the running lights and so on. When the socket is getting proper power, the tester’s various LEDs will light up corresponding to each wire in the connector.

Testing your vehicle-side connector is essential after installing a new custom wiring harness and is highly recommended every time you hitch up to tow. Also, if you are experiencing electrical problems with your trailer, a CURT trailer plug tester will be able to tell you whether the problem is rooted in your vehicle’s electrical system or if your trailer needs some rewiring.

All CURT connector testers come with LED lights to be bright and long-lasting. Wire testers are available for 4-way flat, 5-way flat, 6-way round and 7-way RV blade connectors.

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