65 Dart Wagon Conversion to a Sedan Delivery

I’ve also got 2 ON/OFF switches installed with pigtails available for whatever purpose I might need. One of them I’ve decided to control the rear cargo lights; the other one I was thinking of a anti-theft switch but then again, that probably needs to be hidden out of sight somewhere. Any thoughts on what to use the 2nd switch for? How about the middle empty slot - some kind of warning light!

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Second pictail for rear foglights under the bumper. Third (the hole) for hazard warning light.