My Headlights keep going out!?!?!?!?

I own a 1994 Toyota Camry. I have been buying the APC ion blue headlights type 9006. I install them without touching the bulb and my headlights are not cracked or broken anyway. They work for about 3 months then they both go out. I am on my third pack of these lights. I just need some suggestions on why my lights keep going out. if anyone can help me, please respond to this and give a guy a hand.

Other Specs: there is 55 watts going to these 85 watt bulbs.