OK haven't looked at the mustang but found out the brake lights also don't work, assuming part of the fuse (main light fuse). I don't have HID's so don't think I'm drawing to much power, I think I have a short somewhere. I actually heard when it happened, I pulled the light switch and heard a pop. Ever since than no dash lights or brake lights. Could a faulty light switch keep blowing the main light fuse? I was told it has an automatic reset or something? Any ideas would be great!! I love my mustang but its been one bad summer for stuff breaking or not working.