from the Dimarzio site to explain it all. Also email email@example.com
if you get stuck, they're helpful and prompt.
But basically, when you remove your current pickups, note which lead is 'hot', ie connects to one of the lugs on the pot. Then get your UJ and solder the red and white, and green and black wires together (to get two lots of two wires) and connect the R/W to where the 'hot' was on your old pickup. Connect the G/B to where the 'cold' was. Do the same for the other pickup. Voila.