81Wagon is right, there are two spring-loaded pins on each lateral end of the mount base that holds the mirror in, just grab the stem and pull down and toward the windshield (don't hit the windshield with it when it breaks loose) or pull down and towards the backseat.

When installing, put a dab of grease on each pin to help it snap into the roof easier.

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1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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"If you don't know where you are going, any road will get you there". Lewis Carrol