Quote Originally Posted by FMS88 View Post
An alternative to adding an auto-shut off device is to wire the door buzzer to sound when the headlights are on and the door is opened. It’s a simple change and virtually free. Solved my forgetfulness, but admittedly, I haved locked the keys in the truck a couple times since the change. But that’s easier to deal with than a dead battery at a trailhead or other remote location.
This sounds interesting, and maybe (?) something I could attempt, with my very limited electrical skills... Any chance you could include a an explanation of how this is done?

On a related note, and I guess something I should fix even before attempting this, the buzzer that goes off while the door is open and the ignition is on is not working. Could this be a defective fuse? Or maybe something the previous owner disconnected? Where can I look to see if there's a faulty or missing connection?
Same thing with the buzzer that' supposed to go off until the seat belt is clicked on.