Update: I determined that the rain sensor is also the auto headlight sensor. When I last posted, it was nighttime, so I made the incorrect assumption that the auto headlights still work, but they don't. Turning the headlight deal to Auto turns them on constantly day or night. That means I need the rain (and light) sensor.
I just ordered what appears to be an identical OEM part with a different part # off Ebay. I will receive it in a few days and update this thread.
I also broke one of the little tabs in the mirror ball joint, so the mirror is a bit floppy. It was bound to break sooner or later considering the age. For now, I'm replacing it with a used (allegedly) excellent condition OEM mirror I found on Ebay. It has a 90-day warranty.
I just ordered what appears to be an identical OEM part with a different part # off Ebay. I will receive it in a few days and update this thread.
I also broke one of the little tabs in the mirror ball joint, so the mirror is a bit floppy. It was bound to break sooner or later considering the age. For now, I'm replacing it with a used (allegedly) excellent condition OEM mirror I found on Ebay. It has a 90-day warranty.