Don ... If there was an owner's manual we would have had an answer. This car was bought used and the manual that Bobby bought did not show or have a reference to this control.

Any ideas?

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Jim Villers
190SL, 230SL 5-speed, 95 E320 Wagon, 01 E320 Wagon, MGB, Boxster 'S', 190SL "Barn Find"