Central locking was handy enough,I just got the door motors no seprate relay(Central locking only works with alarm)just 2wires from the alarm to 12volts, another 2 to Ground and 2 to each motor.Have a wire connected to the interior light so that If someone opens the door the alarm will sense the voltage drop from the interior light illuminating and set the alarm off,but also they're is ulltrasonic sensor,bonnet pin(Don't want anyone stealing the lump)and a wire to the ignition so a hot wire will set it off aswell.
A few people actually asked my in college why I put an alarm on a 89 micra. . .ha ha just have to laugh
