Electronic Compass ???

Ok, we understand and got past EZ Pass problem now.............

I just installed a Gentex auto dimming mirror with that nice compass reading in the upper right hand corner. These things are not cheap, but I need / like the compass feature since one was not stock on the SVX.

The unit worked fine outside of the vehicle. Now that I have gone through the trouble and effort of installing it (nicely I might add) I found that the compass feature DOES NOT WORK!! It stays at one reading (SE) all the time!!

Has anyone else installed one of these and got it to work sucessfully?

Is the windshield causing this problem too?

I probably should have asked here before attempting this project!

Thanks to all for your input here!!