I have a pioneer DEH-P6600 that's been in my car for quite a while and I've had no problems with it. A while ago I changed my starter out in my Civic (I DID disconnect my battery), everything went smooth. When I hooked everything back up everything worked well, except for my radio. All the fuses in the panel are fine, and on the back of the radio. All the wires in the harness are connected. I even bought the same radio online and it still doesn't work. Any ideas what it could be?