Don’t know what year or model your addressing but here’s a picture of my ’50 gauge cluster. The one that shows the fish paper insulator best is kind of blurry;
http://rides.webshots.com/photo/2051497640098611668XNufJz
http://rides.webshots.com/photo/2353743490098611668whnTKM
I think the reason the fish paper is there is so the connector won't short if it gets bend down. I'm sure the terminals themselves are insulated from the case.

Denny Graham
Sandwich, IL


Denny G
Sandwich, IL