I got the harness laid out and can't get it to fire, 67 GTX, I put a 70's style alternator and a MoPar electronic dizzy in it. I ordered the harness from Year One for those to be plug and play. I get 6.5-+ to the + side of the coil, get a spark when turning the key on and off. Have tried the old known good dizzy, known good old coil. The harness has wires for a 4 terminal ballast that reads ohms correct and a newer style voltage regulator. Should fire right? Do I have to move some wires in the block maybe?