Quote Originally Posted by Concerto_Polson View Post
I used some wire, and clip things to make an adapter from Concerto to Civic.

I know it was working, because without a connection between all the plugs of the plugs (if that makes sense), the car won't start.
you said previously the concerto harness plug has 3 wires but 4 pins. I had a look at the ED plug and it only has 2 wires but 3 pins. so maybe whatever the 3rd wire you are attaching shouldn't be attached if you are trying the complete civic alternator. Have you looked at the concerto FSM?

sorry about all this, if I was aware they weren't interchangeable I wouldn't have sold it to you....