Genuine power locking is removed because the security system is being placed and customers are like jo jo box mein hai sab fit karen...
So basically you need to use Dmm and trace wires using continuity from fuses and if wires are not broken then by dmm trace + bat 12v, or ign 12v.
Do the same for power windows. And yes it has relay for power windows so if you'll run direct wire, it won't have relay and won't be able to deliver more current.