Hi,i have a 95 S6,when you say the HID is a plug and play, where do you mount the ballasts? do they need to be mounted on the car outside the light cup? and if so how do you get the wires in to the light,do you take off the stock covers drill a hole? thanks 1995.5 S6 Avant,150K+ miles <auctionpics at cox.net>