check the fuses first. I have a 91 with a different dash, but you should be able to remove the trim around the dash. may be screws or just pull off, the plastic cover should be screws, mine where torque heads ( good reason to buy new tools ) take those out pull cover, I think I had a black peace below the gauges with screws that had to come out also, but the gauges should pull right out might be tight so be careful. one edge of a gauge might be over the other so you might need to pull two or more. the bulbs will be behind the gauges.
how do I replace a fuel pump on a 1993 Ford Bronco 302 5.0 L
The 1988 Ford brake light switch does not adjust, replace it with a new one.
Your speedometer doesn't work.
how to replace a thermostat on a bronco 198511
Look up 1991 ford escorts manual transmission speedometer
Where can you find instructions for taking apart the hub to replace rotor on ford bronco xlt 1995
my 86 full size bronco haha
replace it with one from the breakyard
Replace the VSS and wires.
Replace the Spedometer cable.
I don't believe it has one , the Ford Explorers 1996 and newer models don't have a conventional speedometer cable , they have an electronic speedometer and a vehicle speed sensor ( VSS )
You can replace the speedometer cable, on your 1988 Ford Ranger, by loosening the cable nut on each end of the cable. The cable will come off and can then be replaced.