Low Beam Bulb Burning Wiring Harness??

Whats up all? I just need some help on a bulb question. I bought a set of 9006 100W supposedly xenon gas filled blah blah...I've heard that the bulbs can actually burn the wiring harnesses or the headlamp assembly where the bulb sits. Is this true? Have any of you experience this? Good and bad advice is all welcomed~!

Thanks All.