Amazon.com: OPPKEPT 12V RV Dimmer Switch, Upgrade 12/24 Volt DC PWM Dimmer for LED Interior Lights, Halogen, Incandescent, Used for RV, Auto, Camper, Truck, Marine, Boat and Strip Lighting (High Side, Silver) :
Automatic Street Light Dimmer Circuit | Homemade Circuit Projects
Amazon.com: 12V RV Dimmer Switch, DC 12 Volt 40W Stepless Light Dimmer Switch for LED Lights, Boat Camper Van Trailer Truck Marine Interior Auto Strip Lighting Dimming Switch Control(Black Cover) : Automotive