I never had the pdf of the wiring manual, you're the man for that!
In regards to the connectors - I have plenty of spares - I swipe every connector I can't get new at the junkyard when I come across clean ones. Toyota made it real easy in the 80s, haha! One terminal I found is hard, the 2.8mm tangless. Toyota Matt got a lead on them - so I just went through him for the terminals instead of hunting for only 10. The rest of the spades are general use from a few vendors. 62s use a 2.3mm for dash items often as well, those are much more common.
For terminal housings - Yazaki and Sumitomo are the best options for new housings, however I found that Tokai Rika will take inquiries - whether they will actually help - not sure just yet. Haven't had to chase one down that hard yet.
corsa-tecnic
cycle terminal
eastern beaver
nexus
Are all great resources. Start reading into Molex connectors and ratcheting crimpers. Lots of cool stuff! Right now I'm hunting for 16awg wire - that is proving to be the hard one for me.