Can someone tell me the orientation of the interior rear view mirror mount on the windshield? The base mount is trapezoidal in shape, so does the narrow dimension of the trapezoid go upward or downward ?? If someone could post a pic, that would help too. Thanks.

Ansbacher

Narrow side up.

Thanks for the confirmation.

Here is (was) my rear view mirror:

Click to view attachment

If you're replacing it be careful where you put it. I put one of mine in the wrong spot and it sucked for years till I broke the window