once you pull the projector out its just that.. a projector with a shield that has a negative connection. The shield flips when the circuit is completed.. for ur high beams. Joe, look at the BMW e46 projectors out of a 330 with Bi xenons. Hella and valeo make them. If you are going to do a full retrofit, dont buy ballasts and bulbs seprate. Buy the orig ballasts and bulbs from a car that has the bi xenons. I dont know what bernie sells, but BMW uses Hella and Bosch ballasts. The Bosch are Very Very durable, I have only seen one fail....Ever.
-Josh
"Not everything that can be counted counts, and not everything that counts can be counted. " - Albert Einstein