Huge and permanently smacked on the grille!

On the W163 and R129, that is...

The detent position is when the base is aligned with the housing. In which case, is slightly racked back.

And yeah, it's straight up on my Dad's '71...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car