Hi Shipmom,
Welcome to the Heartland Owners Forum.
I would expect the switches on your rig are in the control panel along with the rest of your switches. I'm guessing maybe you have tried all the switches and the lights don't turn on. It may be that the bulbs are burned out. Our 2011 came with incandescent bulbs in those fixtures, that have a relatively short life - I think ours burned out in the first year or two.
The switches may be labeled "Scare Lights", or "Flood Lights", or "DS/ODS Security".