12 volt battery... check..... alternator... check... anything else really needed to do this? I have alternator installed but not wired up yet... got a gm with only one wire alternator... how do I wire it and I do know lights n things have to be changed out blah blah blah but I'm talking about major things such as silinoid... coil..... ... this has been wrecking my brain.. not really a mechanic at all...