Ron Francis wiring

I have a small issue with my harness, car is 74 swinger and harness is xp777. Neutral safety switch, should there be only one wire or three. One goes from relay->NSS(center of course),then there is mention about GM style two gang switch, or if you use another type of NSS, connect purple wire to panel numb 3, blue goes panel numb 4 , another ends goes to NSS, it doesn't matter which connectors, so, outer connectors is back up lights, and center is ground, should there be three grounds or what?. Thanks....

EVERY Ron Francis harness comes with a serial number on the fuse box so you can call us with that number and get a quick reply / answer to your questions. There is no need to search the web for solutions nor do you need to re-engineer our products. Simply call us with the problem and you will get the information you need. Since there are several ways to wire these systems, please call 800-292-1940 for help ASAP.