[Perfectlap]

^ Like Burg Boxster pointed out I believe there is a DIY thread on Rennlist or RennTech that shows how to wire the V1 to your dome light so that you won't need the cigarette light adaptor for power.
Very handy. Turn on the car, V1 has power. I think, not sure, that you have to snap off the cover to the A pillar to hide the phone cord wire from the V1 to the remote box if you have one? That remote box is a must have and keeps the flashing light from getting the attention of the Polize hanging out on the side of the road with his lazer gun.
As far as position, you basically suction cup the V1 right above the rearview, a tight fit but it works.