Trip computer
 

My trip computer on my 86 5ktq is not working. The screen is black. What do I do to get it working again? Also, my auto check shows the water temp sign all the time cold or hot?

Check fuses and add coolant.....
 

On my 200 fuse 4 & 26 for trip computer. #4 fuse-cigarette lighter, clock, trip computer, interior light, vanity mirror light, electronic climate control. #26-electric mirrors, auto-check system, trip computer, memory switch controls for drivers seat. If your coolant level is a little low your coolant warning symbol will light cold or hot.

had this problem in the fall ... check all fuse with a meter , don't go by fuse legend