This poor car really needs a ton of work.
I've been working on the driver's door. PO changed the driver's window actuator, but the door open switch was also worn out. On the coupes, front windows will drop a few mm whenever the door is open to preserve the door seals. The E36 door latch strike pin contains the sensor switch, and it commonly wears out. One of the symptoms is that the window will randomly drop while you're taking corners. While it's a funny problem to have, it's really annoying.
I've found out that the newer E34 shared the same strike pin, and I just happened to have a spare E34 in the driveway! Sadly, this particular 1990 E34 was too early. It shares door strike pins with the E32 7-series. Despite that, the early E34 strike pin is almost exactly the same. Same wiring connector, same bolt patters, same seal, same washer plate. Sadly, the otherwise identical E34 part is slightly too deep to work. I used it anyway, just left the door hanging out. Ordered a few used ones off eBay, just swapped them in. It finally works as designed!
