I think these lamps are either fake or not made correctly. The first bulb I installed shorted out the whole fixture, now I have to buy a new fixture. The second bulb I tried in another fixture didn't even fully work until I removed the new bulb. I was afraid of shorting out the second light so I didn't try the bulbs again. Something is wrong here. UPDATE: Two lamps need to be replaced. Defective bulbs have short-circuited both ballasts/lights! Replacing both will cost me $250!