Need help with wiring alarm (2002 Mazda Demio)

[Panashe]

Hello guys, I have a mazda demio 2nd automatic. i would like to add an alarm to the car, the most difficult part for me is tracing or finding the central lock wires to connect. If anyone has an installation guide for an alarm please let me know, thanks!

Also, I am looking for an owners manual for this car.