Yes. I can't find any blown fuses but I'm also unfamiliar with these trucks.
Most of the labeling/print for the fuses is worn off.
One thing I can add is that when I acquired the truck, the radio was powered only by a direct line to the battery but for some reason there was a fork terminal on...
1981 C20
Truck was fitted with an old Equalizer (aftermarket) to the Radio. Wiring was a mess (should have taken pictures). Radio was powered only by a constant directly to the battery. Radio was grounded directly to the chassis. Factory wires were cut.
At this point, the horn/dome light/cig...