This is a simple diagram i put together on my paint program showing how to install ignition controlled door locks in my buddies 91 dx sedan. Ignition on doors lock, ignition off doors unlock. Way easier than having to press a switch every time you want to get out of your car. This can also be integrated into and alarm. Hope you get some use out of it.

Supplies used:
2 SPDT relays
4 two wire actuators
1 rocker switch three prong
1 DEI 452T module
18 gauge wire
various style crimps
simple hand tools