battery disconnect in my 2019 Solaire travel trailer

I don't know for sure on yours, but on my 2019 Rockwood mine is under the front A frame under where the propane tanks are and it's one of those switches with the big red plastic key that you turn about 180* for OFF and then back to turn back ON. I have to get on my knees and reach up under it to find it.

I have a front light light that I switch on and then flip the switch to make sure it turns off. Then I turn off the light switch.

Good luck! Mitch