To clear up some confusion... In the beginning the neutral safety switch wire was routed directly from the starter relay to the switch on the trans as a single wire passing through no other connectors. The reverse lamp wires went to a switch inside the car.
before 1970 the only wires that went through the bulkhead connector at far right were those to the wiper motor. The only quantity of unused ports in the bulkhead connectors were in this far right side member. So, When the reverse lamp switch was moved to the transmission the only practicle route was through 2 of those ports. Easy enough to join the NSS wire there too.
Aftermarket vendors like Evans may have refered to that far right connector as "wiper connector" for any year model. They might refer to the other 2 as forward light connector and engine/charging connector only because those terms loosely describe what circuits pass through them. This arangement was only for ease of production line assembly. Othrwise they could have put any wire anywhere and when they needed to, they did.