I need all the help I can get with this one. I have been reading other Threads related to no AC and Tachometer, but have not been able to find one for a 1996 E320. Does anyone knows if both the AC and Tachometer are related? I also read that the Crank Speed Sensor may be the problem? Any sugestions? I welcome any advice.

Also my Cruise Control stoped working at the same time of the AC and Tachometer. All fuses are good.

I appreciate the help.