I have an 03 that had an after market CD player installed. It turns on but doesn't have any sound. They didn't cut any wires so I plugged the stock head unit in and it turned on also but doesn't have any sound. I want to go back to the original but I can't get it to play music. I checked the fuses in the cab fuse box and nothing was blown. Where should I go next? Do you think the amplifier is toast or does any one have any ideas? Thank you in advance.

 

The RAVE circuits manual is your pal. Wiring diagrams in living color, pictures of connector locations, etc.

 

I will look again but anything I found concerning the radio was very vague and generic. It showed a picture of a relay then a fuse then then the amp or the radio then fuse to amp but it didn't show where anything was actually located. I am guessing the fuses are under the dash but there isn't any relay that is labeled as a radio relay anywhere.