OK, I'm a bit confused. I'm trying to wire in a new In Phase amp into my brothers car. We wired his old one in no problem, but now with this new one things aren't going well. When we turn the car on, the amp won't turn on. So I was in the middle of taking the wires out to find a problem, and when we took the earth out, the amp turned on!! Realising I forgot to disconnect the battery, I done that, put the earth back in, reconnected the battery, and the amp didn't work again?!? Any ideas...? Thanks