Fuse blowing

use a bigger fuse until it stops blowing then follow the smoke to the fault location

 

what make of truck and what year?

 

if you have a dash mounted dimmer switch for the gauge cluster check the dimmer switch and its housing for corrosion and condensation, there are tabs or something on the side of the switches you can pop the box out and pop out the individual switches to inspect/clean/replace

 

Is it your gauge lights? Or your actual gauges not working? You probably have a wire rubbed thru, grounding out on a piece of metal behind the dash

 

jfc it probably needs a new stack of D cells

 

You have a short-circuit. If you put in a big enough fuse to not blow you will be buying a new wiring harness or truck after the fire dept is finished with their work. The short-circuit could be caused by an almost broken wire, a pinched wire, a screw driving into wires somewhere.

 

Look for brittle or broken wires, melted plug at switches. Might get lucky and find something. Dome lights shorting out and causing fires was a problem on early 90’s Pete’s.