Tach and lights

[Chuckles]

I have been working on getting my '89 rebuilt and on the hiway. The problem I have is the tach and lights on the dash have quit working. Could it be one of the relays under the dash or do I have a bigger problem? Engine seems to run fine but the tach, volt meter and lights. Any help would be appreciated.

 

Chuckles

[MiCarl]

The following are all powered through the SIGNAL fuse:

 

Neutral light

Brake lights

Horn

Tachometer

Voltmeter

Temp gauge

 

If none of them are working I'd look at the fuse.

 

If I recall correctly there are 3 connectors at the instrument panel, 2 plug into the CMS and the third is on a pigtail and carries all the other stuff. You didn't forget to plug it in did you?

 

Finally, if everything else is ok check for +12V on the Brown wire the instrument panel plugs into (key on). If you've got 12V there the problem is somewhere in the panel

[Venturous Randy]

And, make sure you have a good ground for the dash.

RandyA

[MiCarl]

And, make sure you have a good ground for the dash.

RandyA

 

Normally yes. These circuits are backwards - they ground through their respective switches/sensors. The common here is the hot (brown lead)