They can go to any wheel, you drive the car and do a 180 degree corner and the racelogic will figure out which wheels are which. (page 18 of manual)
You can use a multimeter on the wires that go to the abs computer, jack the car up and spin the wheel to make sure you've identified an abs wire. (It tells you how to do this in the manual)
Mine were
Injector 1 .. red/blue..... red wire with blue band
.......... 2 .. blue/red..... blue wire with red band
You can test for continuity with a multimeter to make sure you've got the right injector wire, one probe on the injector wire that goes to the ecu and the other probe on the wire thaT goes to the injector itself.