Re: Cleaning The 7-Way Contacts
Depending on the plug's construction, it's probably held together with a few small screws. On some types, disassembling the plug will give you access to the contacts.
I have used dielectric grease on the contacts before. It keeps them un-tarnished, but I stopped doing it as I was worried about the amount of dust and debris the grease might collect.
There are 10 kinds of people in the world, those who understand binary, and those who don't.