I use Meguire's Exterior Trim Detailer and am very happy with it, kinda hard to find though. I buy it at O'Reilys Auto Parts. There are several discussions on different products you could read up on, maybe search the forums for "cladding."

Hotflyer, I have used the above mentioned in sunlight, not sure if I was suppose to or not. You could always do it first thing in the mroning when you get up.

BTW, I spray the detailer on mid size area at a time, then use a approx. 3in X 3in terry cloth towel to even it out and remove extra. The small size towel lets more of the product stay on the car rather than a large towel with more "dry" towel surface removes alot of the product. Make sense?