Headlights Went Out

I have a 2000 Newmar Mountain Aire. Driving down the interstate at night, last week, both headlights went out at the exact same time. I’m pretty sure that this occurred as I was alternating from high to low beams. Doing this by clicking on the turn signal bar. Made our way limping to a gas station to spend the night. Adding to the mystery was that when I shut down the engine the rear tail lights did not turn off. I had to shut the battery disconnect to get them to turn off. In the AM I opened the disconnect and then pulled the headlight pull-bar to test the lights. Headlights would not turn on but tails did. When I shut the pull bar the tails stayed on until I hit the battery disconnect. I could then turn the disconnect back on and the tails did not turn on thank goodness.

Any comments/advice is appreciated. I’m planning to replace the push/pull light control hoping that this could be that simple of a fix but just don’t know.