Originally Posted by
Hornblower
IMHO, neither the stock halogen bulbs nor the 35 watt HID bulbs from SoCalMoto generate enough heat to cause heat cracks in the lenses. When you say you can see strands of web moving inside the lenses, I would assume that what you're seeing is, in fact, spider webs. Now...how spider or spiders got inside BOTH your housings is anybody's guess. The rubber boot on the back normally seals quite well. What you could do as a test, is remove one of the rubber boots and the bulb and blow some compressed air through the opening to see if this will clear out whatever is in there.