There is one that looks like a headlight bulb connection but both bulbs are already connected. Thank you for the quick reply.
That is probably for the HID option, my Kingpin had the HID and had the extra plug in. When I broke my headlight I went with a regular headlight due to availability at the time and had to use the other plug. BTW, if you decide to add HID, you would still need the ballast. And on my Pin, it was under the seat.