1. 1. 【Stepless Dimmable & Memory Function】This LED Puck Light Comes with Touch On & Off Switch with Blue Indicator Light. Touch the switch to turn on & off the light. Hold on the switch to adjust the brightness level between 10% and 100%. It has Memory Function, when the light turns on, the brightness will be at the status of the last time when it was turns off.
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   3. 【Energy Saving & Brightness】Super Slim Full Aluminum RV Panel Light Comes with Long-lasting LEDs only Provide 3W Power to Save Your Vehicle Battery Power. Emits Super Brightness Up to 300 Lumens and 3000K Warm White Light to Bright Your Vehicle.
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   5. 【Easy Installation】 Flush Mount Design Make it more Safe and Easy Installation with Only 2 Screws (Included). 2 Wire Designed - Red wire=Positive (+), Black wire=Negative (-). Size: Dia 4-1/4'' x H 1/2''. Super Slim Light Body Fits Narrow Places Well. You will Love These Lights with Great LED Lighting Effect!
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   7. 【Universal Fitment 】 Designed for 12 Volts DC Power. Excellent Replacement for RV, Motorhome, Camper, Caravan, Travel Trailer, Boat, Marine, Cabin, Kitchen, Cabinet, Stateroom.
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   9. 【High Quality GUARANTEE】cETL Listed. We take full Responsibility for our RV Lights and Customer Dissatisfaction. One Year Warranty GUARANTEE!

4.5" Round - Clear Lens with Touch On&Off Switch and Blue Indicator Light

Fast and Easy Installation

It has two wires, Red wire for positive, Black wire for negative

And all you need to do is simply removing your old fixture, and then attaching this new light fixture with nuts and screws to your existing wiring and socket.
 
Remember to connect the wires before that, then installation is completed.
 
Facon Bright Full Aluminum Surface Mount Light has a switch that you could turn it on/off independently.