I installed an aftermarket deck and it was working fine until I replaced the stock external tape deck with a storage pocket and I"m guessing it must have shorted something out. I checked every fuse in the dash and engine compartment and they all have continuity. If I press the eject button on the deck it makes a sound, but there is no sound from any speakers and the display doesn't illuminate, but if I run power from my inverter to the ignition (red) wire the display illuminates but I only get sound from the subwoofer. I know there is a preamp for the speakers, but it is difficult to access to test it. Just wondering if anyone has any ideas before I potentially dismantle my dash board... I made an appointment at car toys on tuesday for $100 an hour and said it could take up to three hours, which I'd really like to avoid. But I need music in my car or I will die. I drive a 2001 chevy tahoe. Any help would be appreciated. Thank you.