Is it a bluetooth GPS receiver? If so, put it wherever you like. I put mine on a sticky pad on the dash, but I've also used it on the console, on the floor, and just about anywhere. If it's in a sedan, you can put it on the hatrack behind the rear seats, or if a hatchback you can toss it in the back. Do try to keep it right-side up, though, because the antenna needs an unobstructed view of the sky.