Quote:
Originally Posted by bacampbe
That surprises me. I had a mirrortap in the M240i I just traded for my Z4. It definitely cut power shortly after turning the car off. There are other changes in "shutdown" behavior, so maybe this also changed. Or I wonder if there are separate switched and non-switched pins in the mirror harness?
(M240i required 2 start button presses: 1 to stop the engine and 1 to turn off the rest. Z4 doesn't use the start button for the "turn off the rest" part.)
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That’s because you tapped into the correct wire
There are two power wires going to the mirror one switched and one constantly on