Recently I had the opportunity to check operation with the clear bulb. I had the door open while running the engine, and luckily remembered to check the dome for heat after maybe 5 minutes. The lens was pretty hot, so i took it off. The housing was already bulged and flaking the chrome off around the bulb. This sucks. I shut the door, but I really ought to be able leave it on and forget it w/o destroying my car. WTF is going on?