So my ebay fogs don't work again. I'm sure a lot of you remember of my issues. It works from time to time. I checked the ground, it's wired directly to the battery and the interior switch lights up. The bulbs are brand new. I was looking at the plugs where it connects to the wiring and there is some green "corrosion" on the terminals. Do you think that would make them not light up at all? How do I clean them off?