I once had to remove some of the lugs from the power distribution panel--
the yellow plastic part needs removed-then you can access the lugs-
Opposite the side where it wraps the spade and isn't together is the side with a release tab-a small flat tool is inserted and this will push the tab down slightly to release it-
In looking at mine-I think once the red plastic is removed you will see in there better--now how to get to it?
Sorry Al, I realize this is a great big issue, I'm trying to help the best I can--