If the dash lights on your S10 aren't working, first check the dimmer switch to ensure it's not turned all the way down. If that's not the issue, inspect the fuses related to the dashboard lighting, as a blown fuse could be the culprit. Additionally, consider checking the bulbs themselves, as they may have burned out over time. If these steps don't resolve the issue, it may be worth consulting a professional for further diagnosis.
The dash light dimmer switch is turned off or bad or the fuse is blown
The illumination lights are replaceable. You will need to remove the dash cluster to gain access to them.
If you have no dash lights at all on your 1989 S10 Blazer, a blown bulb can be the problem. You should also check the fuse.
Faulty ground to the dash.
its just a fuse, look for a fuse panel there are two. one under the dash and the other under the hood.
Just a suggestion, check your trailer lights harness for corrosion. They were taking the dash lights down in my chevy.
The dash illumination dimmer switch is shut off or broken.
dash lights wont work
Could be the dimmer rheostat has an open Could be a bad headlight switch Could be blown bulbs
The dash board light dimmer control switch may be turned off or broken.
Probably a blown fuse. What you need to find out is why the fuse blew.
at the back of the firewall 4 relays lined up.