What you think the chances are of adding a key sensor to rear hatch on LE?

This is undoubtedly inviting speculation, but I'm wondering if the wiring, mounting points, etc are already there, and it'd just be a matter of purchasing and installing a key sensor for the rear hatch, or if they have different rear hatch wiring, etc for the different models?

Checked online to see if there were some type of wiring manual or such, but it looks like it's $800 to purchase that, Lol.