Electric mirrors help. Driving me crazy

Hi, my missus wants electric mirrors fitted in her 04 k12 Micra.
She has the wiring from the switch and I've already fitted the looms from the doors but I'm struggling with wiring from the switch to the doors.she has no wires from the doors so having to wire myself.
The switch wires disappear somewhere into the dash so trying to splice in to the back of the switch unless anyone knows where they go.
3 wires from each and the colours don't correspond so had to test by trial and error but I can't stop both moving at the same time.

It's driving me insane.

Does anyone know how to do this correctly or know what colours correspond to each function please??

Thanks in advance.