Key 1 key 2 and ACC??? Do you mean the ignition switch?
Yeah, I was just quoting the labels on the wires. Ran out of time yesterday to start looking deeper under the dashboard. Hoping to get back on it this afternoon but it may be tomorrow before I can continue!
Yeah most of it should work off the standard ISO leads. Extras like camera etc need those extra fly leads attaching. If you have Bose then maybe an extra connection for that too to splice in. It should be more or less plug and play with the correct leads.
Yeah, all in place now and working 
Going to get it all set up first and fully test before pushing back in place as that seems quite tricky with all those wires so haven’t screwed it into the dash yet.
ok, one final question.
I have not connected the S. Sense (Speed Sense) cable from the back of the stereo. However, it is mildly frustrating to have to turn the volume up and down depending on the speed the car is travelling - would be much nicer if the stereo handling that. I assume the S.Sense connect to the speedometer somehow - any idea which colour cable I should be looking for behind the instrument cluster?
“Should” be Pink.
PS-Which should be in the main audio loom behind your unit.
