Husky Towing 7-RV Blade to 4-Flat Trailer Wiring Adapter w/ Test LEDs 15174 19-3188

Husky Plug-In Solution LED Adapters- Husky's L.E.D. vehicle-to-trailer adapter series incorporates built-in trouble-shooting. If the trailer lights are not functioning correctly, you can isolate the problem by simply looking at the adapter. If the lights on the adapter are functioning, it's a trailer-side problem. If the lights are not functioning, the problem is with the vehicle. 7-Way RV Blade to 4-Wire Flat (Includes function testing LED's!)