740 Turbo REAR Fog lights?
 

Im looking in my owners manual and it mentions rear fog lights.

I popped out my rear light housings and I have:

2 small lights on the top, these are the running lights.

1 in the middle on the end, this is the blinker,

On in the middle towards the inside, this is the reverse light.

And 2 on the bottom, 1 on the far side, and one towards the inside. The one towards the outside end is the brake light. The one towards the inside never illuminates, on either the left or right tail light.

My "rear fog lamps" switch is stuck in the "down" position, I massuming this is the ON position. The bulbs are good.

What bulbs would this switch have an effect on, and where can I find a good one, (not from a stealership).