I am putting my car back together after it has been apart for a while now. I went to hook up my hei but there is a wiring harness coming off the hei under and beside the vacum advance that isnt hooked to anything yet. What are the 3 wire that are together ? On the other side of the distributer I sould just need + and - right? Its a msd knock off. For the life of me I cant remember what thoughs 3 wires that are together in the little harness thingy went to. I looked and looked thinking surely there was something there that plugged into them but I found nothing that fit. The wiring on the car is a nightmare. pretty much every thing has been bypassed and simplified, but the is a rats nest of unused wires underthere and I have no idea what they all go to. If someone knew what had to be hooked to the hei in order for it to function properly it sure would help me out. thanks yall. I hope everyone had a happy thanks giving.