I have a first gen Delco style alternator that i was hoping to run as a single wire setup, but I don't think it has an internal exciter. So I wired it up with the 3 wire setup: BAT terminal to battery+, Field #1 to the ignition acc/on switch to charge the field/exciter, Sensing #1 to the batter+. (battery+ are all on the starter solenoid's 12v+ side to keep things simple) I figured it was correct so started the motor to tune the carb, but when I went to shut it down, the damn thing kept running. The distributor was still getting 12v+ from somewhere in the circuit. So with my probe I found that Field #1 was supplying 12v back into the ignition circuit, not ground as I expected. WHAT? Neither one of those pins on the back of the alternator (not the power tap) should be supplying 12v, not the voltage sensor or the exciter input. The sensing circuit should be drawing voltage, so should the field, not supplying it. I'm basing my information on this: http://bob_skelly.home.comcast.net/~bob_skelly/alternator_conversion/wiring_alternator1.html Which shows the exact Delco alternator (older 3 wire style) that I think I have. Can I run this thing 1-wire without the Field#1 connection? Maybe I have the wrong alternator. I wanted to run it as a 1 wire setup, even fabbed a new bracket so it would fit on the 390FE block. This is not a 1-wire alternator with an internally switched exciter. Which is what I probably want.