Replaced mine with 18watt LED's,moved the halogens to the rear.Measure your existing bracket and you should be able to find something that will work..Check Amazon.com.I think these are the ones. http://ecx.images-amazon.com/images/I/71q5jDm6APL._SL1500_.jpg
I have considered buying a LED work light from M C McDermott. They are not cheep but are designed for extreme outdoor use and will definitely light up your night.