Please help!! I have a 05 GT, and just finished installing my audio system and alarm. Now the car won't fire, it just cranks, and gives a small sputter after it sits for a while. I am an certified 12 volt installer, and have been for the last ten years, and never have I seen anything like this before. I have checked all fuses/relays, which have power, but the pump never kicks on. I checked the fuel cutoff switch, no problem there either. Anybody have any ideas or seen a similar problem?