Fascinating. It is entirely possible (as has already been the case once or twice in this thread) that I am mistaken about how this actually works. I've not actually tried installing the F-16 set in the car yet, but I think I will do so anyway this weekend and try them out for a week. If the daytime running lights wind up working, then we'll just have to chalk it up to my own misunderstanding of the process. If they don't, then it's possible that there might be different revisions of this product. I don't think that the housings have anything to do with it, since there is no wiring or electrical components inside of them.And it works, when I put it in drive or reverse the high beams come on in reduced brightness level.