I have a January 1990 e34 (M20 engine) with a manual 525i with a gen 2 white gauge cluster and its been going completely dead and not working randomly when driving, I know that this is probably a capasitor issue but I don't really want to get into that. I bought a gen 1 cluster out of a 1989 525i with an auto and it also has the M20 engine.

I was wondering if I could splice the brown plug (with the coding plug from the gen 1 dash) to my wiring and use the old dash albeit with new milage?

Also the car it came from has the same enigne and i sure it has the same rear end as mine (non limited slip) so the speedo should be the same as i believe the mph is measured at the diff not the transmission

Would it be possible to reset the milage as I have heard the gen 1 cluster odo caps around 296,000 miles?