Tachometer not working

Hello,

It looks like you might have a fuse out because it takes two to run the cluster and tach. Here is a cluster wiring diagram and a guide to help you check for power and ground and also a signal from the cruise control which is where the tach gets its signal from.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here is the fuse location.

Check out the diagrams (Below)

Please let us know what you find. We are interested to see what it is.

Cheers

Thank you I did some testing from the guide you gave and found the tachometer has bad I was able to un-solder it and install a new one from a used cluster. All fixed