I've just changed the box over the weekend, and it had it's original box in it from 68, and the only switch / terminal I could find was the inhibitor switch for Park / Neutral starting. (single round washer type connector)
I've put in a later box that was sat in the car when I got it, and this has a 3 prong switch in it. Again, 1 is for the inhibitor switch ( middle 1 I think ), and the other 2 look as though they are for the back up lights, but looking at a few wiring diagrams, they've confused the hell out of me

Is the switch in the box itself? (coz 1 of the diagrams I'm studying says "Back-up light switch (syncromesh)" ) In which case, I assume it's just feeding the switch with a live, yes?
In which case, where is the switch for the single terminal connector?
This little bugger has me stumped at the momnent.
Any help would be appreciated. ........ Blue??

TIA
Jules.