What year model as pre 10/2004 the cruise control loom is already fitted and goes nowhere near those pins. Post 10/04 it's spliced into 27 & 31 in the 54 pin connector on the LCM, plug X12
MFSW should be into pins 9 & 10 X10170
Are you looking at the right connector??
You cannot simply select alternative pins as your not using them simply to cross a partition and continue your own wiring the other side, but to connect into the bus
I can send you PDF files for both cruise and MFSW if you need to investigate more