won't start....

OK, so I wrote to the A904 builder and asked which comb he used in the A904. Let's assume that is the issue, that is, I put a 1-wire NSS where a 3-wire NSS was appropriate (the A904 has the comb for the 3-wire NSS).

I have the reverse light switch on the column, it works. What do I need to do to change over to the 3 prong NSS? Specifically, assume I have the 3 prong NSS and the pigtail. Which of the 3 wires do I use, and how do I hook them up?

B