Well I decided that they belonged in the shop, so on Friday I stopped at HD on the way out there and bought a few parts.
3 of these
3 of the bulb extenders
and 3 12" 1/2 black pipe (I decided that it was just easier to use new pipe rather than cut and rethread the old pipe.
First up was to rewire all three of the lights, they came apart much easier than I thought they would.
Once I got every thing apart I cleaned them up and painted the pipes and the swivel sockets that mount to the ceiling boxes.
Then I installed the new wire in the sockets.
While I waited for the paint to dry I installed the 3 new boxes over the table saw and fished a new line to one of the ceiling outlets controlled by a switch.
Dumb me I didn't get any pics of the finished product. I used 42 watt (150 watt eq) cfl's and the out put is perfect.