Thanks for replying!!

Cootvon, the radio has been taken out and the wires are capped off. I guess the kid who had it before me did wire it wrong. His dad said that he burned an ignition wire but I can't see any damage anywhere. It starts up just fine.

87 XLT I don't have a test light but I do have a multimeter. Do you know which readings I would get if I used this instead of the light? Also are the fuse links the ones attached to where the positive battery cable attaches to the side?