The headlight conversion thread got me thinking.

If we have Bi Xenons why is there a high beam halogen light? I notice that when I turn on my High beams that the xenons seem to have a gate open up that allows more light out, but if that's the case why is a halogen light included?

 

Every car I have owned with bi-xenons has had halogen high beams. Probably because it takes time for xenons to "warm up" and halogens can be flashed and activated almost immediately. I don't believe xenons can perform in the same way. It is also likely the reason why the cornering lights are halogen as well.

 

The Xenon hid does take a couple of second to be fully lit up to 100% brightness.
If you consistently flashes the high beam, the HID conversion is not recommended.

 

I didn't even think about that, total blank out on my part.

I remember reading somewhere that constant on/off of HID bulbs will cause them to wear prematurely as the HID bulb takes time to warm up, so that may be a factor in including the halogen.