So this weekend my truck decided to start melting the 30a headlight fuse. The weird thing is that it melts the plastic but doesnt pop the fuse. It had a 20a fuse in there so i thought that originally this was the problem. Then i noticed that there was some metal pieces in the terminals so i used a pick and seemed to have gotten it all out. I replaced with the correct 30a fuse and it still does the same thing. Next i unscrewed the fuse block connection on the firewall cleaned out the gunk and then applied di-electric grease to the connector. still same result. any suggestions?