I had to replace the lever assembly on my '92. Like you, I had hi and low beams and turn signals, but no flash capability. I also lost the intermitent position on the wipers. I think you are looking at a new lever.

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Coast Aero Support Services, LLC
'92 MB 500 SL
'01 BMW 525i Sport
'98 Harley Davidson RoadKing
'74 BMW 3.0 CSi - Gone to a good home