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I noticed some of the same corrosion on my 2012 sg. Not so much on the fuses yet as in some of the slots that dont have fuses in them. You would think they would have a better sealed fuse box.
Looks like its about time for a new tube of dielectric grease
I have another on the shelf- that tube , I think, is over 20 years old.
I don't have anything with points anymore, even the Panhead is electronic ignition ( as are all the Cadillacs).
I little smear on the plug wire boots and here and there on the lightbulbs etc.
You can clean the terminals with QTips and toilet bowl cleaner or a CLR type product. Once done with that... a little dab will do ya with the DE grease.
You can buy electrical contact cleaner at Radio Shack. Or you can use 90%-99% isopropol alcohol as well. It will not leave any residue. Clean using q-tips and some of those tiny dental in-between brushes to clean out small female connectors. Wait till dry to reconnect. Don't scrape them because you'll remove their conductive coating and leave a rough surface that will soon fail.
07-09 nightster was a bad design to drain water into the fuse box, I finally figured it out and replaced all fuses and relays and greased them, no more battery drain in 2 days.
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