Just used this guide to save me tracing wires.
Like you I got the lock and unlock the wrong way around, although your guide still shows the wrong way, this is what I did - GREEN(car) to white, and GRAY(car) to white/black
I have a haynes manual but im not good at reading them (too much flicking backwards and forwards to keys etc)
I got my indicators working - used the BLACK/white and BLACK/green wires going into the steering column (have to remove the surround, bottom right connector) connected to the brown pair from the unit.