Good morning all. New member here. Recently purchased an 04 GT. It (supposedly) has a motor from an 07 crown Vic. Long story short the alt. is not charging the battery. The plug is a 3 wire with only 2 hooked up to the wire loom. Alternator is new. I do have a loose motor to frame ground. Will try that first when I get home. Any thoughts or insight would be greatly appreciated. I have done some research but the crown Vic motor in the stang is kind of specific. Anyways thanks in advance for any help.