“Corn” Light Bulbs

[Bloodhound]

Depends on the lamp. There are single mode, dual mode and triple mode lamps.

The ones I generally get are triple mode. Ballast driven or 120v driven, single-ended or double-ended. If you're replacing T12, you'll need double ended if you don't want to replace your tombstones. Most T8 are double ended too, but as long as the ballast is good you can use a ballast driven lamp (Sylvania's SubstiTUBE is the most common ballast only lamp I've seen).

I believe the ballast may going. Old, hardwired and recessed in the basement ceiling so I think I'll wire around and try the w/o ballast route.

Thank you for the info on that!

 

[Mongo]

How is the re-wire done? Do you re-route the wires to bypass the ballast or is there something else to it? I've tried searching a while back but never found the info I needed, I've got several flouros in the basement that never seem to want to start when I flip the switch...

What Dern said, I got the right bulb to use no ballast and just removed them from the equation. Plenty of extra wire in the old fixture to pull the ballasts out and use everything else.