well, explained. Also remember as they corrode there is a smaller and smaller place of contact which leads to heat, heat leads to more expansion and contraction which leads to smaller and smaller place of contact. if this happens within a connector you will eventually toast the connector.
Rodger 2018 M3W "Dreamers on the Rise" 2004 Plus 8 (wife's) old Goldwings and a couple of Harleys