electric problems with electric fan

[HotRoddin]

Ditto what Jester and Rev said.

If you find the fan to still be good, with the melted insulation you described at the connectors, you might want to check if the crimp is still good at the terminals. When you're working with 12 volts, just a bit of a bad connection between the wire and the terminal (poor crimp?) will give you a little bit of resistance there, and it only takes a very little resistance at 12 volts to drop enough voltage across the connection to create a ton of heat, which makes the connection even worse etc. etc.

Rod