Rear 14 pin to engine is notorious for the yellow wire connection needing attention.
Sounds like you have addressed all of the connections and should be good to go until/if any corrosion builds up again. All your measurements sound correct.
At a minimum, you know where to look for issues should it act up again.
A small Dremel wire wheel bit spun lightly in the female contacts does a good job to clean.
Try some De-Oxit D5 as a cleaner and final treatment as well. (Good stuff for contacts, cleans and lubes and preserves)
Great job going through everything that is in the circuits.
Happy motoring.
