I have a 98 f150. the dome light stays on i have to take the bulb out and when does work right the radio don't work. puzzled

Who installed the radio? Edward Scissorhands?

larry moe and curly? look for a speaker grounded or something

I'd start looking at the pull switch for the headlights (if there is one) that cluster of wires frequently is a tap for radio guys, and the switch is most likely defective as there is a dome, on and off selections. This selection reed switch has joined the other party and wants to me ON instead of DOOR. could keep pushin' on the selctor switch but I think the reed has jammed the thing ON.

If you are lucky they tapped into the nearby cigarette lighter. that fuse is easy to find.