Thank you bfgstew for pointing out to me
Re wiring all as per post #14 now the probe works. Using my script the bit went down to touch the plate and up 1” as it should. The LED light in the diagnostic screen is OFF and the volts between the plate and chuck is 5.1 with correct polarity (black wire to clip and red to plate)
However I must point out that this wiring is not a universal fix for the C10 BOB. To my limited knowledge in electronics it depends I think on your router spindle insulation. I have used the C10 before with other routers like the same as I have now (Bosch Colt), air cooled spindle and a Taig spindle and never had any problem neither did use any resistor. When I used the air cooled spindle I also had the C41 variable speed control board.
Thank you all for the help