The light that is lit in your follow-on post is the fast idle (choke) light. Is your bike equipped with a switch on the throttle body frame, near the throttle position indicator? The reason I ask is because BMW stopped equipping K75's with that switch around 1988/89 and yours is a 95 meaning the switch and possibly bulb are not there.
As for the damage to the flexible circuit inside your instrument cluster, it certainly can be the cause of this problem. Is your gear indicator working at the moment but not the neutral light nor the start enable feature? If the answer is "yes", then see if you have continuity between the cathode of the diode and Pin 5. If no continuity, then the traces on the flexible circuit are damaged and start enable will not function.