how to conect relays for keyless entry

i want to put a keyless entry in the wife´s ford focus, currently it has a excalibur alarm and manual locks. i want to lock/unlock when arm/disarm is pressed, olso it has to lock when car is started but doesnt has to unlock when the engine stops... how can i connect the relays to do that?? what else do i need (circuit)? thanks (sorry if my english is not so good)

You need an ACTUATOR something like this. The locking part when the car start. That's just a matter of programing the alarm unit to get that function. Check with your alarm unit owner's manual for the programing instruction. And you need to wire it up like this to your alarm unit.Be careful whose advice you buy, but be patient with those who supply it.