I think those are night lights to aid in hitching up in the dark.
I don't know about the Elkridge, so I can only offer some suggestions.
Look for a switch in the forward compartment near the hitch.
Also if you have a remote those lights might be controlled only by it. Check it out.
You might also look in the area where you hook up your freshwater, if you have the UDC.
Let us know when you get it figured out.
Peace
Dave