05 Access - what is this wire connection?

I was looking behind the "blank" switches on the left side of dash - next to fog lights and rear diff switches. The middle blank has a wire connection that is kinda inserted into the blank - just waiting to be hooked into something....anyone know what it goes to? I thought maybe an alarm hook-up.

I was looking behind the "blank" switches on the left side of dash - next to fog lights and rear diff switches. The middle blank has a wire connection that is kinda inserted into the blank - just waiting to be hooked into something....anyone know what it goes to? I thought maybe an alarm hook-up.
Well, in my acc cab 05 thats my glass break microphone, comes with the RS3200 plus.