With the help of the excellent posting on the site, I successfully completed the removal of the healter unit and have replaced the busted levers. I had ordered some replacement bulbs from Miller's in anticipation of this project, but found out they were the wrong size...perhaps they sent me the ones that go behind the speedo or tach. The old bulbs I took out of the unit are 12V/2W bayonnette-style, but are very tiny and have writing on them, "Dr. G Fischer". Can anyone tell me a US supplier that stocks these bulbs or a MBZ part # (or vendor part #) that I can use? Thanks!