I had the intake manifold and battery replaced on my 99 ranger and now when I got it back it worked just fine except the factory radio wouldn't turn on. Headlights​, blinkers, AC, dash lights, etc. All worked just fine but the radio will not turn on. I bought an aftermarket radio to put in it when it got out of the shop but with the factory radio not turning on I don't want to replace it until the issue is resolved.

 

Check your fuses first thing

 

Yeah look for fuses. Most aftermarket radios now come with an inline fuse in the wiring harness that came with the radio.