Obc/tach/ not working as well as interior/dash lights.

[dashboardmonkey]

Check your fuses again. A visual inspection is just not good enough. Also, the car is 20+ years old. The fuse sockets can be wore out. Replace the fuses with new ones. I have had this exact problem before. Fuses looked fine, and even tested fine. Replaced the fuses and it solved my problem.

[smokemhontas]

My tach and econometer just went out today too.. Fucking sucks

[sc318]

Okay, I've had my 91, e30 for a little over 2 weeks now, when I first bought the car and for the first few days after I had it everything worked fine..
Then the tach and econometer decided to go out, so I read up about the SI Boards failing. I pulled the cluster, pulled the board, and tested the batteries which both read 3volts. I assume this means that they are fine. The obc was not working from day 1, so I pulled the center console out and it turned out the obc was not even plugged in, so I plugged it in and now it just blinks and doesn't really function properly. My dash/interior/trunk light's also recently went out on me. I've checked all the fuses. I'm a bit at a loss for what to look for next besides start tracing wires, which I'm not looking foward to.

Does anyone have any input as to what else it could be?

And I realize some of these questions have been beat to death, but I just wanted to double check before tracing wire.