Lost my rpm lights on my dashboard/ need help

[ttypewhite]

All my fuses are good, my dash board lights work, but my rpm lights don't. Anyone experience this before? how do I fix it? Little ****t like this bothers me to look at it.

 

[gn85]

A couple of questions. Was your tach correct before it stopped working?? Or was it 500 - 1000 rpm off like everyone elses. If so, when you turn the key to just ON and the car is NOT RUNNING do you see any lights at all for the tach. What about your boost lights??

Try dimming your dash lights and see if that gets 'em back. Have you done anything under the dash?? Put a radio in?? Other gauges?? Alarm?

 

[striker_29]

The stock rpm and boost gauges are notoriously out of whack on these old cars. Dont know that you could fix it unless your an electronics guru. You can get a recalibrated unit from Caspers, just look at the bottom of the page:

http://www.casperselectronics.com/cgi-local/store/commerce.cgi?product=SVC

 

[machinegun]

Go under the hood, drivers side behind the alternator. The will be two plugs there, one greeen with white wires and one black with a brown wire. You may have to dig for it but it is there. See if these are plugged into each other. If they are unplug them your tach should come back. If they are not plugged in together than the tach module is probably dead. You can get a repiar from Caspers electronics. Check the wires first. Alot of people see those and try to plug them in together. Let me know.

 

[Turbo Brian]

On my car, the problem was in the wiring. There are two white wires that come out of the ignition control module. One of them supplies the signal to the tach. That wire enters the pass compartment at the body connecter below the brake master cylinder and runs up to the fixed connector behind the instrument cluster.

I switched out my instrument cluster for a known good one, and the problem remained. I had a break in the wire somewhere between the ignition module and the plug in the back of the instrument panel. Before you buy a new tach, try to jumper the wire from the module to the back of the inst cluster, it could save you money. Good Luck.

 

[ttypewhite]

The tach was working fine. Then I checked the timing on the car (new motor) When I thought all was good I got inside the car and cranked it over. It started and all I hear is a big exhaust leek kinda noise. So I shut it off after about 5 seconds when I realized the tach is not working no more. I got out the car and saw that I forgot to put the flippin spark plug back in cylinder #1. So my guess is that the spark plug wire must have arked on something and jacked up my tach. After that I did the usuall checks for fuses and the dimmer switch in the car. But nothing. The 2 connectors under the hood are not plugged into each other. Is there any fuses on the back of the guage cluster?

 

[machinegun]

No there are no fuses on the back of the cluster.