Ok tonight I bought a brand new radio(CD player) and came home to install it, the old radio was aftermarket but like...15 years old but it worked. I came home and installed the wiring harness and installed the radio and.... no power, the new radio wasn't turning on for anything in the world. so I thought maybe the radio is bad. So I switched over to the old wiring harness and put the old radio back on to see if maybe it was indeed a bad radio, but nothing the old one didn't have power either. So I thought, maybe a fuse?? I went under the dash, found the 10amp fuse and, nope, it's intact and not blown, so then I thought maybe it needed a bigger fuse, so I put a 20 in there and, nothing, so I went back to the 10 and well, I'm stumped, I checked the wiring and they are all connected properly and I just don't understand.

Its a 90 camaro rs 5.0, I don't understand how from taking out an old radio and installing a new one could go so wrong. Should I disconnect the battery and then reconnect it?? any help is appreciated.

 

The new radio needs three things in order to turn on, Ground, ACC and 12V... make sure those three needs are satisfied and it should work no problem.

Current (amperage) is determined by the device on the end of the wire, whatever it wants to "pull" is what will be running on the line. If a current of more than 10A is reached on the line, then the fuse blows to protect the wire from overheating.

 

This might sound stupid, but its worth a shot... did you check to make sure your keys where in the ignition and "on"?...........oh ok, good, then I don't know what it could be, check the wires to make sure they're hot...

 

aside from the black ground wire on the harness... try grounding the outside of the cd to something.. see if that works

 

make sure that the antenae is plugged in also, ive installed a few radios that needed the antenae to be plugged in to work. worth a shot

 

I am betting on the ground wire does not have a good ground or the hot wire got crimped.