It's opening is 3/4". What are these called? - molex connector, i would get yourself a pin extractor and a few bags of all sizes of new male and female crimp on connectors for your machines. then you can push those out and make new harnesses as you need in no time.

yup lube is bad my SWE1 had white lithium on everything all gunked up and full of dust , the coils hardly cycled . if i had to lube i would only use powder graphite