NSS Wiring Help

The 76 727 NSS is 3 prong. The center prong is for the NSS the other 2 work the back up lights. Just make a connector and or use the the 3 prong connector and hook your 66 single wire to the center wire only. The NSS should work. I have a 77 727 in my 65 Belvedere and have it wired that way.