Superb II 3T5 (2014, 2.0 TDI CFFB): rear left door not communicating – which wire is the LIN?

Hi all,
Same problem as in the “rear driver side door will not lock” thread. VCDS says module 62 (rear left door, J388) is unreachable, and the driver door, passenger door, BCM and gateway all log 01333 “no signal/communication”. I swapped the rear left door control unit with a donor one, no change.

In the driver door loom (in the rubber boot) I found several broken wires (a thin green one, a white/purple one) and a frayed thick red one, with cracked insulation on most of the others. I’m going to replace them all.

Before I cut anything, can anyone tell me:

1. Which wire is the LIN between the driver door module (J386) and the rear left door module (J388)? Colour and pin in the door connector.

2. What the thin green wire does (mirror auto-dimming?).

3. Whether any airbag/side-crash sensor wires pass through that boot.

Thanks!