Dielectric grease (or silicone grease) is used to stop oxidation on electrical connections. I just had a bulb do that so I redid both front turn signals with it so they should all work fine now. I got my fuses off of ebay there were enough to do two cars for about $7. I still used dielectric grease on them even though they are copper.
My problem is set off by running over earth creters in the wonderful roads here....
