The headlights are not fused, they have a circuit breaker built into the main headlight switch on all GM built cars and trucks. If the headlights are not working most likely the headlight switch and connector will be burnt out, the contacts will be discolored and the connector smell burnt, replace both, the parts are fairly cheap
SOURCE: We have a 1984 chevy silverado headlight power.
everything power usually runs through the fuse box
SOURCE: 1988 chevy silverado fuse box
I hope this helps a little, you said the fuse box panel is gone....so how do you know some fuses are missing?
I just bought a 1988 silverado also, the wipers ,power windows and windshield washer fluid only work "when they want to" I think I have a bad ground somewhere.
SOURCE: my 1988 chevy silverado blows the heater/ac fuse when engaging 4w
There is an electric actuator on the front axle that engages 4WD. This part commonly fails resulting in no 4WD. Unhook the electrical connector to this part and see if heater still blows fuses. If It does not blow the fuse, the problem is in the actuator. If it still blows the fuse then it could be in the wiring. Buy a repair manual and trace the wiring schematics.
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