XR-7 Dash Center Accessory Switch

On my XR-7 the “Accy” switch in the center bank is unused. I’m curious if any of you have hooked that switch up to anything.

If so, what?

Fog lights on my first 70

I have a manual transmission and used my accessory switch to replace the jumper that is part of the starting circuit. That way I can prevent anyone from just shorting the wires in the switch.