Neutral safety switch and B&M shifter

I'm not sure if they added a mechanical interlock on the 74, but they didn't have them in 72. You can try pulling the column down into a position that would be in a gear and see if the starter turns. If it doesn't than there must be something in the column. Look at the three wires coming from the trans, the black and black w/tracer are for the reverse lights. The other one should be brown w/yellow and that one you should connect to the starter relay.