Radio and courtesy lights not working

[Chevyboy270]

On my 92 silverado just suddenly about 2 days ago my floorboard courtesy lights stopped working and my radio wont power on i checked the fuses and they are fine so i dont know what caused that to happen ?

 

[evilunclegrimace]

On my 92 silverado just suddenly about 2 days ago my floorboard courtesy lights stopped working and my radio wont power on i checked the fuses and they are fine so i dont know what caused that to happen ?

Check for power at both the radio and the floor lights with a test light to a known good ground and then check for power at each unit using the ground at the plug for the radio and lights

 

[Eveready]

Sometimes the fuse socket will actually oxidize and the resulting crud can keep a good fuse from working. Some contact cleaner on the fuse would not hurt and if not there the wire from fuse to the circuit probably has a bad splice in it somewhere. Many times an aftermarket radio or other device will have a bad connection that eventually works loose. When you chase it down let us know what it was. A test would be a jumper from battery positive to either the radio or the courtesy light positive side, just make sure you jump to the right side or you might find a spark of the wrong kind.