I'd like to throw something else out there in regards to this conversion. Rather than using LEDs for the AEs, perhaps we can get them replaced altogether by CCFL rings? See the thread below on a German forum where people are replacing the AE rings on the Depo headlights with CCFL rings. In my opinion, they look phenomenal, even when off, and they get rid of that bluish tinge that the Depo rings have.
http://www.1erforum.de/tuning/einbau...fer-27660.html