Well you have projectors, seems like your getting them off e-bay since you said seller, well first off I havn't heard of any sort of adapter for a projector, when you get the projector you will see what I am talking about, Projectors take H1 low beams, unless there BMW or some fancy car, H3 for High beams, mtech are yellow right, I would say keep the the ones they come with, they are clear thought nothing blue purple or yellow. How much are you buying these things for?