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Your cart is empty.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 connector testers are great for testing tail lights, turn signals, brake lights, ground connections and other electrical components on your vehicle. A connector 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 socket is essential after installing a new custom vehicle-to-trailer 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 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. This particular electrical tester fits a 6-way round socket and comes with quality plastic construction.
Weistek
Reviewed in the United States on January 30, 2025
Tested 6 pin connector of old truck.
katherine
Reviewed in the United States on June 26, 2024
Arrived promptly. Didn’t have any instructions so had to go online to find them. I assume will work. Will update when we use it
DAVE
Reviewed in the United States on June 14, 2024
It works as advertised
Customer
Reviewed in the United States on December 10, 2023
Fast delivery
kevin
Reviewed in the United States on October 19, 2023
Left blinker made the right trailer light blink. Didn't know if it was the truck harness, or the trailer harness. Arrived in two short days. Turned out it was the truck harness. The kit I bought was wired wrong colors. Bought a 4 pin, 6 pin and 7 pin tester. Should have had these years ago, would have saved many hours troubleshooting circuits. Although the wiring harness was also Curt, accidents happen but they do make good stuff.
Christy Cole
Reviewed in the United States on April 5, 2023
Came fast and great price. But no instructions on how to use it. I had to go on the web and find directions
DiscoverTodd
Reviewed in the United States on August 2, 2022
I've been trying to troubleshoot my trailer lights. I bought this to ensure the wiring harness on the vehicle was set up correctly and no blown fuses. I was able to test all the lights on my own, except the break lights--this is where the friend comes in--I needed someone to hold the break pedal for that one.
Alan C. Moore
Reviewed in the United States on July 19, 2019
This works fine. The lights are a little dim and the indicators are hard to read, but it serves the purpose.
Brad Heidman
Reviewed in Canada on November 15, 2019
Excellent tester. Sure makes life easier.
shcheblanov
Reviewed in Canada on June 16, 2018
So handy
mr.fixit
Reviewed in Canada on January 26, 2015
I bought two of these; one to isolate truck/trailer lighting problems. I drive a salter/snowplow for the county and I got one for our mechanic to check upper rear lighting problems.
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