Since the conversion, did the car start? I did the same conversion last week and ran a #10 wire from the alt to the bat. and added a jumper wire from the back of the alternator to the #2 terminal on top of the alternator.
I dont think its necessary to do this, I did under advice from someone else on this site. My regulator is gone, and all wiring has been taped back. So the guy was right in that instance. I also use a remote solenoid and the only wire hooked up to that (since my HEI conversion) is my purple ignition wire.
Obviously there is a wire that is not hooked up, or maybe something shorted out.
I think by telling us exactly what works and what doesnt it will be easier to troubleshoot for you. Also what is the voltage at the batt? Do you have power to the fuses etc? Let us know. Sean