Not sure if it will work the same in your vehicle, but I have done the procedure to several vehicles of mine in the past. Look around where the door matches up with the door "frame". There should be a small black button, it could be covered in a rubber boot, or not. There is probably two small screws holding the plate on. Remove screws and plate, take out and disconnect the wires, sometimes there is a quick-connect, (and then wrap ends with electrical tape-to seal out moisture) and then put back in. This should work. It may also disconnect the "door" function of the cabin light, but it's worth it. I also have disconnected the "chirp" coming from under the hood when locking my vehicles too.
2006 Dodge Power Wagon. Warm M12,000 lb winch, Front and rear lockers, disconnecting Sway Bar, 4:56 gearing. Aluminess Slimline Front Bumper, BuckStop Rear Bumper, Airflow Snorkel, Mombassa Roof Top Tent on a Front Runner "Bakke" rack. BFG 35" KM2's.