 1999 Mustang with premium sound can't install aftermarket deck?
I'm having trouble installing an aftermarket deck into my mustang. It has it's own amplifier...now I bought the harness for mustangs without premium sound, so then I bought the harness for mustangs WITH premium sound...I plugged everything in right and I connected all the cables properly (Kinda hard to screw that up since they are all labeled). I get power no problem but I don't get any sound, i turned up the volume and clicked the mute on and off.
What did I do wrong? do I have to bypass this car's amplifier? | 
