Sáll rather basic DC wiring shit realy, Clint I was going to do that type thing to with close prox readers for entry but to take the factory immobiliser and ignition out puts to much at risk imo, Im even putting in a removable key for the ground on my starter so when I leave it somewhere dodgy i know for a fact the thing aint going anywhere!
Clint post up a pic of your windsheild keypad! it intreags(?) me how this could be at all hidden!