What's going on here?

[Skunksmash]

Another thing I found:


One of my cheapo chinese headlight bulbs has completely crusted over with rust. The base of the bulb, is severely corroded. But NOT the electrical contact points. Maybe this is what I get for buying the cheapest headlight kit ebay has to offer. It came with 4 new headlights, that looked really good. As well as 4 new bulbs. To help hold the bulbs in, there is a rubber cap on the back of each headlight, which is about 3 inches in diameter. Each of those 4 caps is pretty badly melted, where it gets close to the bulb.

The bulb that I'm referring to with the rust, apparently melted its rubber backing cap so badly, that it began to allow moisture onto the base of the bulb. And the rust began aggressively eating up the base of the bulb. I have no idea if this could be related to my melting relay problem, though. The rusty bulb was still working fine.