I've got one flasher for the multiball (blue ramp lower) that will not light an LED bulb. The bulbs are fine, they work in every other position. It's bayonet base and seems to be making perfect contact and an incandescent bulb works perfectly in the same socket. Any ideas?

The bulb is fine, it works if I move it to another socket.

Indeed it was the wires reversed on the socket. Thanks for the tips!