really liking the responses

some clues

1: The switch is a simple on/off switch
2: its the only on/off switch that I thought of that doesn't look completely out of place
3: It has a very simple function

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OBJECTS IN MIRROR ARE CLOSER THAN THEY APPEAR, ONLY IN A BENZ

89 560SEC
90 350SDL (Rudolph)
91 350SDL (300SDL drivetrain)
87 BMW 635CSi (Swanhild)
89 BMW M6 (euro)
99 Suzuki Hayabusa (Only the fastest thing ever)