I have a 20W lamp ballast unit (from an energy saving lamp) that I would
like to drive 2/3 9W lamps with. I was about to simply run the lamps in
parallel until i realised the orginal lamp was a 4-wire lamp, but the
new lamps are only two-wire. So, before I make a mess of my ballast, or
myself, i thought i'd see if anyone here had experience with them?

Cheers all!