So, a quick update.
I figured I should start working in parts as this is a big project so today I started with wiring the module itself.
I started with the CAN wiring. Since there was not much documentation, I had to figure out things on my own.
Reaching the CAN gateway was almost impossible. I had to flip my whole body upside down to work down there. I
somehow managed to cut the ziptie, untie the wires and then started wiring. The kit came with an extension 3 pin connector, which is used to wire the CAN high/low wires without damaging the original wires. I connected the brown/orange wire to pin 8 and the light blue/orange wire to pin 18.
I then connected the black/green wire as per o_a_ravi's suggestion to fuse 34 using add-a-fuse and also connected the ground (brown) wire to the nearest grounding screwing point.
I then connected the module itself and wanted to test it so I connected the rear speaker and one sensor.
I activated the PDC display in module 5F and also coded the PDC module itself.
However, when I put in reverse, the display is working but all the sensors are showing a '!' sign (aka not working). I'm not sure why this is happening, I thought I could atleast see one? Do you have to connect all 10 sensors for it to work? I just wanted to see it in action before I drill holes/rewrite the whole thing.
I'm asking because I wanna make sure it's not a CAN wiring issue. I think my wiring is fine because VCDS
is able to read the module and can code it.
EDIT: Another note - the volume control on the infontainment settings screen is working, I can control the tone/volume. So I think the CAN wiring is good or else the ifnotainment wouldn't be able to interact with the speaker?