Hey guys just bought a 1988 Subaru gl-10 turbo wagon full time awd and I noticed the odometer and the tachometer are not working any ideas on how to fix it?? Thank you

Welcome to the USMB.

 

I would suspect it's as issue with the speedometer cable or mount between the cable and transmission.

 

I'm going to move this thread to the old gen forum as they may be more familiar with the specific issue and fix.

odometer is a cable directly from the transmission.

 

Undo at the ends and see if it turns by hand. It's difficult to pull out of the back of the instrument cluster from under the dashboard (small hands with long arms & fingers with a steel grip are your friend). You may even find that someone hasn't pushed it back into the cluster previously.

 

Tacho has a wire directly to the negative (yellow wire) side of the coil. If you pull the cluster out, see if the wire is connected with a multimeter.

Second that^^^ it's not hard to pull the cable off the trans. Check if it visually looks good. You could also test it with a power drill by connecting it to the trans end of the cable and turning it, watching the cluster. Its not to bad pulling the cluster out a bit and popping it off the back. Making sure it spins from one end to another. And tack is only driven by the single wire stated above. Last time I bought a Speedo cable i think it was only like 50 bucks.