try that in AMAZON
IZTOSS 3 Gang Rocker Switch Panel with Power Socket 3.1A Dual USB Wiring Kits and Decal Sticker Labels DC12V/24V for Marine Boat Car Rv Vehicles Truck Blue led
I just installed that today and plan to power it from the power lead in the 7 pin RV plug, just like I also did for my extra backup lights. One switch will be main control and the second one will control bed lights, third one power to fridge