Another tip - make sure to use wire which can stand up to the current and voltage requirements of your ballast - see http://www.powerstream.com/Wire_Size.htm .
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Look at the amphenol connectors that KINO FLO uses... all you have to do is count the holes and look at the configuration. You need 2 holes/pins for each separately switchable bulb... and the ballast uses 3 wires from the wall... and 2 wires EACH to each bulb... so do the math.
Totally depends upon which ballast you use. If you use the Fulham as some on this thread have done, then yes its about 2 wires per tube with some jumpers locally at the socket. Other ballasts may require 3 and some even 4 wires. You need to check the wiring diagram for the ballast you buy to be sure.
Really wish the pics were still up on this thread...