Oh hell I absolutely loathe those weatherpak connectors. Total junk IMO. I used them on my MR2 and I 100% expect to need to replace every single one. Next time I re-wire anything I am trying DTM connectors.
100s of thousands if not millions of cars rolled off an assembly line from the factory with them. Maybe you had some user error here
Other manufacturers followed with connector designs of their own and now it's plain impossible to work on any car without encountering electrical connectors.
Hell mine have been in my 70s race car since i rewired it in 2010 without issue. The original molex connectors were open to the elements and all corroded. If you dont crimp correctly, anything will fail
I dont recommend buying SPECIFIC connectors at a store because theres a 1000% markup simply because the average person doesnt or cant make a new termination on their own, so they rape you
This may help some of you willing to learn
A word of advice,
the center crimp is the full power crimp on the copper
The weather seal crimp is LIGHT power, just to hold it