I have a nice amp out of a 2008 ford GT mcintosh but I have no idea what the diagram of the wires go it had no pin connecter i got lucky and found one that fit perfect crimped the wires and fitted them into the connecter but I have no idea what the head unit imputs are the speakers out or ant power is i did figure out the positive battery and neg ground I just dont want to guess and ruin the amp if a volt/ohm meter would read it but if it could how do I read that....im clueless