Get any 3 prong halogen bulb and any 3 prong female connector. Take a dremel to your original sealed bulb and cut out the existing bulb, and enlarge the opening so that your new halogen fits in. There are many options, all will work. Once you have an appropriately sized hole, insert new bulb and secure it using your favorite method. I used electrical tape and then duct to hold it in, but you could use jb weld or anything else too. Then you wire in the 3 prong female to your wiring harness, plug it in and whammo, you've got a 7$ headlight!