I have an 04 intimidator and last winter the stereo stopped working after charging the battery. I figured it was some kind of wiring issue due to it being aftermarket, the battery then drained and after charging it again the stereo came back on (with no sound) and stayed on without ignition along with the blower motor. Does anybody know what may be causing this? I changed out the ignition switch hoping it may have been the issue but no luck.

 

Well, all bets are off with an aftermarket radio installed but try removing the accessory relay. It is designed to provide power to the interior for 15 minutes. Look in your owners manual, I think it is on the passenger side fuse panel. But it doesn't usually power the blower, so that would be another issue.