Not sure I could get my head round this one tbh Tom! I do like the idea of the dimming mirror though! Is it difficult to set up/install? Where did you get the platinum one from? (My interior)
Gaining some great knowledge from you!
Take a look at the pictures of the Platinum mirror I recently sold in the market area. Picture 3 is important to study. The foot of the mirror mount must look identical to this with the 2 clips (1 either side inside the hole), the newer versions have 3 smaller clips to fit into the newer style windscreen mount.
I’m sure there is a way of removing the 3 clips and fitting the older 2 clips but have not had to try that yet. Possibly Paul @depronman done something similar. I know he does offer auto dimming mirrors with a bracket but cannot remember price.
If you do find (auction site generally £30-50) the correct mirror (with the same clips inside the hole as per pictures 3), then all that is needed to physically fit it is to remove some of the end of the plastic trim which goes up the windscreen to the headlining. 2 minute hacksaw job with a little sanding afterwards to tidy up any burrs.
The wiring is some thing that can be attempted yourself but I’d always recommend a visit to or from Tom @timmus to complete the retrofit. His work and the time in his company is utterly brilliant.