[KevinH1990]

There is only one Xenon/High Intensity Discharge bulb in each unit of the OEM litronic headlights. The high beam and fog lights have regular halogen bulbs. So, the high beam is just like it would be in your stock headlights. The Xenon bulb stays on when you flip on the high beams, so overall it is much brighter than the stock all-halogen units.

If you add the control module, you have an additional feature. The Xenon bulb rotates up when you turn on the high beam. So, you have an even brighter effect because the halogen and Xenon bulbs are both aimed higher.

I eventually added the control module to my car. You can see it in operation in this video: https://www.youtube.com/watch?v=YGkfebCCf2Y

This shows the parking lights, Xenon startup with self-leveling and high beam turn on.