I was in Slim's very first HID Group Buy when it was on TN (when they allowed random GBs ) and my HIDs are starting to go caput.
There have been 3 times (all random), where one headlight will go out and then I try to inspect the bulbs and balast and see nothing. Then the light will work again the next day.
Is this a sign of the bulb losing life? The balast?