Okay, so I bought an 89 325i a couple of months ago and I have been trying to solve the gauge problem and have hit a dead end. The tachometer, fuel economy, and temperature gauge are not working. I just replaced the SI board with a re-manufactured one with brand new batteries. I checked fuses and they all were good. The previous owner had a shift light installed and I only have a few minutes to work on the car when I am home from college so I haven't got chance to make sure his wiring is disconnected. I have already tried hitting the dash and it didn't seem to work. Any suggestions?

Comment