Hey guys, I need some advice. '95 SL500, my tach and speedo quit immediately after replacing the battery this weekend. Everything else on the dash works. The MPG gauge is functioning, the odometer and trip odometer work, The cruise control works and the convertible top system works. All of the major wiring systems I replaced several years ago including the ETA rebuild by BBA Reman. All fuses have been checked and are OK and wiring to the battery seems OK. I had to jump the car to start it and had AutoZone swap the battery, the car wires were attached to the "old" battery at the time of the jump start, I also tried charging the battery before that and the wires were attached to the battery when I did this. I've done this before with no bad results. What happened?

What have I missed? Is there a signal generator for the tach and speedo, a relay or something else I've failed to check? I don't know how to remove the cluster, so I'm also open to suggestions on that too.

Thanks, Steve