While driving the both Low beams will suddenly shut off, Turn the switch off and on the low beams re-ignite and are fine for awhile. It does not effect the high beams. The issue happens while driving ,which is a little unnerving. Have not checked if it happens while car is stationary. I had replaced both bulbs back in September because one was out, but replaced both while I was at it. Any thoughts as to the cause, both light go out simultaneousl.