Trailer Lights Stopped Working

Trailer Lights Stopped Working. I used it last night and it was working. now this morning nothing. Turning on the vehicle's headlights causes the trailer lights to stop functioning.

4-1/2" Round Trailer Stop, Turn and Tail Light, Flange ... (Josie Garner)

If the trailer lights work on your buddy's truck, then the trailer lights work - period. Recently my trailer lights stopped working correctly. Another clue is that the rear electrical Windows also stop working at the same time.

I checked the fuses under the hood and in the glove box and don't see anything marked for the towing lights.

The adapter can be found an auto parts stores, RV supply stores and some truck stops too.

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Headlights, brake, dome and flashers work fine, just no dash and tail lights. A plug is inserted into the vehicle's connector so that they will light up when you press your brakes, allowing other vehicles to stop in time. I used a tester on the Mazda's wiring harness and am not getting power.