
First of all, the plastic housing should be the first clue. The mounting screw simply rotates in it. Second, I connected the power supply, everything worked. Began to fix all the wiring and nothing. The light doesn't come on. Tried directly on the battery, nothing. I suspect the bulbs have burned out. And no, the fuse is not blown. I've had a lot of running lights over the years. Garbage. The mount wasn't very secure, the headlights would vibrate when driving if I drive that far. My main complaint, aside from them being blown, was the plastic sleeve that the mounting screw went through. If it was metal or thicker plastic it might be fine. I returned them.

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