[CaptainGizmo]

My presumption is that it’s not much different than in even the newer coaches…pretty basic. Our 2015 system is tied to the front door, set with the outside keypad. Once it’s opened in any method, the electric horns go off in a random pattern.

Since your Arming switch is inside, then it has to be tied either to an exit/entry timer to delay arming or triggering.