You could have a blown fuse. If your Dome light don't work when you open the door and the speedometor doesn't work when you drive and your miles don't show up then you probaly have a blown fuse. It's a 15 amp fuse.
Yes.
broken cable from gauge to Trans. I have a 94 Sunbird and I have that same problem
The Mazda tachometer and the speedometer have separate cables. The tachometer cable probably does not work properly. Change the tachometer cable.
it sure would work.. behind the dashboard are plugs for each function. one for tachometer, one for speedometer, fuel, water temp. ect.. if your new dash doesn't have a tachometer it will not interfere with the speedomet aspect of it. but you will not have a tach obviously. that sucks kid
One possibility is that the tachometer connections to the circuit board of the cluster have become corroded. It is also possible that the tachometer has just become worn out and needs to be replaced.
rev counter not working
because they are broken.
There are several things that can cause your engine to misfire and the tachometer to not work properly. The most common cause is a malfunctioning vacuum hose.
If the tachometer only works a few times a year the VSS is malfunctioning. This can occur when oil is spilled on the unit and messes with the sensor. Cleaning the sensor will allow the tachometer to work properly.
A bad ignition coil can cause your 1987 Acura tachometer to quit working. A bad tachometer cable or ground wire can also cause it to quit working.
Replace the dash cluster that's what it sounds like to me since your tachometer and speedometer both don't work
Usually. It can also pull the signal from a spark wire.