Whilst I try to research things before I do them, there is value in the philosophy that you can find help for things that have gone wrong after you've done them.
If the controller is not capable, then you would have to update it to get the function, anyway.
And problems in the process (like above) are there to be cured online.
And, for me at the moment, I am getting more and more handy at stripping down switches to repair or modify them.
But my angst comes from trying to get the right bit (or the bit that give the best bang/buck, but still does the job) in amongst all the various part numbers. Ordinary wing mirrors at 60 quid, or folding ones at 150, leads to about 180 quid's research into repair kits, wiring, etc. in fact, if you can retrofit to your existing mirror chassis, there's 300 quid research to find benefit. (Of course, the research may not have benefit, so don't spend until you're sure)
Anon
