Verify Tractor output, and fully test the lighting system of a pup trailer rear socket. This product is designed to test the output of SAE 7-pole sockets, such as those found on the back of the Tractor and Pup Trailers. The second pup depends on it!
- LED Indicators quickly identify complete circuits by glowing red. No light means a problem circuit.
- Constructed of molded PVC for impact resistance.
- Internally grounded.
- Solid brass pins/sockets.