I don't hardwire my V1 because I'd like to have the flexibility to move it from one vehicle to another when needed although it can be hardwired.
Now, I'm curious how much difference in mounted height will start to have any effect in detection. I drive a 1st gen Toyota Matrix lowered about 3 inches. But it looks like it picks up less strength of the same radar signal every time I use the V1 in my friend's Honda Civic. I know mounting position will play the most part, but... does the windshield angle has anything to do with signal strength?