Need to reset chapman alarm father replacing battery

Set off the car's alarm by pulling on the locked handle and then enter the car with your ignition key. Locate the alarm system underneath your dashboard on the driver's side. You can do this by popping off the dash panels and exposing the system around the ignition cylinder. Turn on your car using the ignition key and press and hold the red toggle switch button on the alarm system. Wait for the alarm to turn off and the system to emit a chirping sound. The LED light on the system will also switch on to indicate that the alarm is reset and the system is active.