Well I'm an idiot...a moments carelessness cause hours of pain. I was doing repairs to my instrument cluster when the plastic part slipped off of the the wire that powers the clock and it touched the metal back of the instrument cluster, the part for the tachometer and the clock.

Now the tachometer does not work and the glow plug does not come on when starting the car. I also did the after glow mod from Jeremy's instructions and that light does not come on either.... the clock still works

Weird thing about the after glow...when the car is cold and I start it, the afterglow light will not turn on, but if I touch the ground wire to a ground not on the instrument cluster, it functions as normal and turns off after 30 seconds...if I touch the wire to a ground on the instrument cluster it will stay off at the beginning and then turn after 30 seconds and stay on!! Weird...

I have checked fuses in the fuse box, fuse on the gp relay, and fuse in ovp relay and they are all good...

Any ideas?? Really wish I would have disconnected the battery...

1987 300d