The control on the mirror has nothing to do with the high beams. Thats only for the mirror.
The autodim sensor is probably flaked out. They aren't super reliable and by now most have died. Unplug the sensor (not the mirror) and jumper the two outside pins together. That will give you manually controlled high beams that work reliably.
The autodim sensor is probably flaked out. They aren't super reliable and by now most have died. Unplug the sensor (not the mirror) and jumper the two outside pins together. That will give you manually controlled high beams that work reliably.
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