Easy to install, no modifications to the lamp needed, no messing around with old ballast. Plugs into the existing 4 prong plug that the old bulb did. Female connector housing is a bit larger than the mating recess around the male connector on the bulb...  Read More

Both bulbs start making a clicking noise and then turn off. The connector seems to be located differently.

This product advertises as compatible with a standard ballast. New ballasts cost more than the lamp and are difficult to install. This should not be marketed as a drop-in replacement for fluorescent circular lamps.