I have a PIC dual LED light and bug zapper bulb bought from Aldi. When I plug it into the exterior sucker on our porch, it doesn't light up. It lights up fine in an interior lamp. The existing bulbs in the exterior fixture work fine. Why wouldn't this bulb work out there?
(click to enlarge)
(click to enlarge)
Your new bulb has a shape which widens out from the base quickly, compared to the old bulb. It is probably colliding with the outer shell of the fixture — or, possibly, the socket's insulating part (white) — before the bulb has been screwed in far enough to touch the contact in the center of the socket.
It is possible to get "socket extenders" to solve this problem by making the bulb stick out farther. This will not be weatherproof unless you find one designed with appropriate gaskets, though.
