What year is your levante? I just tried this on mine and it kind of works, but the power is not switched, so the radar stays on even when the car is off.Successfully tapped the mirror this weekend. Ended up using the round sensor assembly rather than the auto dimming mirror. Used this kit from Mirror Tap: MirrorTap MTX-1010, RJ-11,... https://www.amazon.com/dp/B01I1XF4XU?ref=yo_pop_ma_swf
Happy to answer any questions! Feel free to DM.