Cluster fun.

Missing connector. It is supposed to be, here is why

That terminal on the switch was the "older model" parking light power. That terminal of the switch is only hot in the park/ tail position, and cuts off park light power in "headlight" position.

All "Ma" did on the newer cars was to power BOTH park and tail off the "tail" switch contact--so the park lights stay on either "head" or "park" postions.