Cool.
Just went through your build thread
My first post was with the incorrect colour of wires was meant to say red and grey (not red and white)
Okay I understand what you did but won't it work as well if I ran 2 wires from the drivers side mirror loom that's the red and grey wires and run that to the passenger side connecting it to the passenger mirror loom of the grey and red ?
That should still work that way ? Not as neat as yours but a quicker way for them to communicate.