The ultrasonic connectors are as follows:
All wires from the sensor go to C0085/C0610 the connector at the base of the windscreen.
Pins 1 and 2 in the sensor are both earths that link and go to C0610 pin 3 then on to the earth point at the base of the A pillar.
Pin 3 in the sensor = Pink/Green which goes to
C0610 pin 5
Pin 4 in the sensor = Pink/Yellow which goes to C0610 pin 4
Depending on the year of the car the wiring pin locations may alter, depending on if you have the Black plug or the White one (same as retro fitting the self dimming mirror) but you should be able to match the wiring.
The diagrams in the workbook are hard work, better to look at the proper ones
Russ