Gregresh, there are several different Norstar flavors, so you need to know which one you have.
For the older 6x16 and 3x8 KSU's, use the VIOLET/ORANGE Pair.
For the 8x24 KSU, use the VIOLET/ORANGE pair of the second AMP. cable (Line ports and Aux. Equip)
For the CICS KSC, use the VIOLET/SLATE pair on the left side Amp. cable.
For the MICS, use the BLUE/SLATE pair on the middle Amp. cable.
MarvO said it