I found that taking the lights all the way apart, including pulling the wires from the sockets, tricky but do-able, and naval jellying everything gets rid of the rust...then I mased off the sockets themselves and painted the rest of it with good primer and paint....then coated the sockets with the grease as above, and of course, used stainless steel screws with anti seize compound to hold the faces on....also put silicone on the face mount, over the O-ring, and some silicone around the rear plug and on top of it between the wires.
brute4c
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!