That thing on the right looks like an AC control. Pretty sure it says "KEEP ON FOR AC."
I wonder if that box on the left (with the Ford logo) is an idle control system of some sort?
The button on the right would turn it on/off, and the buttons on the left let you set/hold the idle speed. (This is just a guess, but I think you'd need a high idle if you want the rear AC to actually do anything when sitting.)