Thanks for your reply,
Those blue/green wires running to the actuator aren't attached to anything, so I'm not sure how the central locking is still working. I will have to take a good look tomorrow, I don't have the car with me. After googling it seems like a pretty common aftermarket actuator which even uses the same green/blue wires the immobiliser required.
i'll test everything tomorrow and if it's working i'll melt the solder, strip it, resolder and neaten it all up with some heat shrink. I don't have to understand it if it works hahaha I just don't want a fire/ short circuit.
That R32 diagram looks more like a continuity chart? Can you make sense of this form the R34 manual?
10V is probably due to very flat battery, i'll recheck as well tomorrow, I did have to jump start it haha.
Thanks again!