The switches and pushbutton are for interior lighting and accessories. I use one switch for the backup camera. Normally it would only come on when the car is in reverse. This way I can turn it on any time.


The rear shelf is the best location for the radar detector as long as you have an audible alarm and don't need to see the display. This way it doesn't block my view and detects front and rear radar equally well. It's also hard wired into the ACC power.