then i guess seeing the display doesn't really matter. There are many places to wire the damn thing. I wired mine to the radio because of its location, im going to wire it soon to something up top near the dome lights or that little fan thingy there. Someone showed how to wire the dome switches together so they both turn on at the same time with one switch and the other was used for the radar detector. Me personally i like having it automatically turn on when the car turns on. If you like that option too, then wire it to the positive lead to the fan up there that detects inside temp of the car. If you wire it to the dome light, it will stay on the whole time.