Hey @Devilclarke and @amal , the xAC mod add on you were discussing, is it worth investigating the 10-15 wire version further?
If they can be sourced,It may be more easily converted to
With a voltage regulation mod for the key fobs.
I was also thinking after I mentioned the 12V key fob battery, the 12V could be directly wired to the door lock module (or relay mod for negative switching)