The closest snow plow dealer is about 9,000 miles away since I am in the Philippines!!
I don't know if this will help but lately I have been using Permatex Dielectric Tune-Up Grease(Grasa Dielectrica Para Afinar)item #22058. I think CRC offers Dielectric grease as well but I don't have any handy to give you a part #. Both are in most auto parts stores state side. Unless you are a manufacturer remember this stuff is like anti seize, 3 ounces is a life time supply.
If you can't find these I have always had good luck with white lithium grease in the spray can. Again a standard spray can is a life time supply for most people so blow the little red straw clean after each use.
Most non fiber greases will work. The good thing about the white lithium is you can spray a foamy goo into a connector that will set up and stay put, unlike Vaseline that will melt In high heat and humidity and run all over everything. You would be better off using WD-40. At least it's easier to clean up.