The instructions that came with mine mentioned that the light itself is the part that gets hot and they suggest the control unit sits outside as its made from plastic. I don't intend to do this, it is my intention to use velcro/hook and loop to stick the control unit to the inside wall of the light enclosure. I'll keep an eye on it for overheating but I don't anticipate an issue given the instructions say its the light itself (which is shaped with fins to dissipate heat) that gets hot.
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