No tach, fuel, temp, mileage gauges

[loudes13]

I looked around, but didn't find any old threads concerning this exact problem.

The only gauge that works on my cluster is the speedo. In the morning when I 1st start it the tach works for a second or 2, then drops to zero. From a previous thread I thought the Si batteries were dead or it was a cluster prob.

Last nite I installed a working cluster I bought and the same problem exists. I can live without a gas gauge, but i'd like a tach, and no temp gauge kinda scares me. Any ideas where to start diagnosing???

[Drake]

how do the Service Indicator lights light up when you start the car? Does the inspection light stay on?

[Court M3]

check the fuses number 10 IIRC

[e30Matt]

To add to Court's suggestion, my friend's car had the same problem. We replaced fuse 10, but it blew again a few days later. Turns out the reverse light switch wire had been chewed up and frayed by the guibo, causing the two wires to short together and blow fuse 10. Maybe worth a look?