My lights do not dim with Xenons on, I've checked. They remain full brightness at all times. They do still fade in and out on unlock/lock which is good. They still look and work great. I've tested the resistor/electronics and so far they've gotten warm only, not hot. All in all very good so far!
Black Sapphire BMW Z4 sDrive35i
Mods: HiFi Tweeters Stubby LED Halos & Front Indicators DVDInMotion SmartTop 313 BMW Performance Alloys LCI Repeaters http://goo.gl/PF4nSz