I have the following wiring in the front side of the house: Switch-> light fixture 1 (front door) -> light fixture 2 (left to the garage door) -> light fixture 3 (right to the garage door). They are all standard light fixtures. I want to keep light fixture 1 (standard) and replace light fixtures 2 and 3 with two motion sensing coach lights (PF-4150-sv). How should I wire the lights? Can I use the existing wiring? Many thanks. Leo