I've done all the basics, such as turning on the brights. It's a verified dual element by removing it, and both filaments are good. There are three wires going to it, so it has a purpose I suppose.
The DRLs do come on with that bulb, but nothing else (that I can figure) turns on the other element.
My low and high beam (brights) work from the outer bulbs, which are HID according to the window sticker. That's the one I want to remove to clean the lenses, but I don't want to force it too much. I can't figure out what the locking or mount mech is for those.