I have two brand new Hella halogenation kits, Hella part number 81140. Each sealed kit contains two Hella 78165, 12 volt, halogen bulbs and two socket adapters that enable these bulbs to be used in place of common 1156 single filament bulbs. 1156 bulbs are used for back-up lights on Mercedes and many other makes. These halogen bulbs are dramatically brighter than the original 1156 bulbs while actually drawing less current. Installation is as easy as replacing a bulb. With these bright lights, you’ll be able to see where you are backing as well as warning others that you’re going to back-up. Retail is about $25 per kit; I’d like to sell both kits, a total of four bulbs and adapters, for $12 delivered to your door.