I have a 72 chevelle with 350 eng 350 tranny non gauge dash. I have the neutral safety switch attached to the steering column but i dont know what wires go to it. I am installing a painless muscle car 18 circuit harness. There are 4 prongs on the switch two on the left that are north and south and 2 on the right that are east and west of each other. Any help would be appreciated.