Adding A Dimmer Switch to RV LED Lights

by | May 27, 2023

Lighting in your RV does not have to be overly bright and harsh. In our Montana 5th wheel we have an area in the back living room that has four LED puck lights that are never used at night because they are too bright. That’s why we thought adding a dimmer switch to RV LED lights would be a perfect modification. Now we can enjoy dimming the lights for the evening and still have the ability to brighten up the space when we’re packing or cleaning.

Installing the Dimmer Switch

We had a dimmer switch next to the theater seating and wanted to use a similar switch in the back living area where the three cushion couch is located. We didn’t need to run any wiring, just replace the on-off switch currently installed with a dimmer switch.

We found a 12 Volt DC dimmer switch on Amazon that was similar to the style next to our theater seating. The switch will dim up to 60 watts (4.2 amps) of incandescent, halogen, or LED lighting. Aside for the benefit of adjusting light intensity, the dimming also reduces heat and power drain on batteries especially for RVs using incandescent or halogen bulbs.

Installation was simple. Remove the old switch, carefully enlarge the hole in the wall to fit the dimmer switch, disconnect the existing switch, connect the three wires – 12V DC power, ground, and the control to the dimmer, and mount with screws and install the plate cover.

LED Flicker

There can be issues where some lights may flicker when dimmed. This is rarely the case with incandescent or halogen bulbs, but can occur with some LED lights that do not support lower voltages for the dimming function.

Our Montana 5th wheel is equipped with puck style LED lighting. These lights work well with dimmers. If you plan to upgrade your RV’s incandescent or halogen bulbs with LEDs, make sure you find those that specifically state they will support dimmer voltages.

One other note. In the video below, the dimming of our LED lights shows a flicker. The flicker is a camera anomaly and not seen by the human eye. Unfortunately we did not have a camera setting that would refresh to eliminate the flicker in the recording and I can confirm that no flicker is experienced from the human eye.

Dimmer Switch Installation Results

Installation took less than 30 minutes and has now made the space more enjoyable for evening TV viewing as well as a more comfortable space when we have visitors sitting on the couch.

We now have a full range of operation for the four LED lights from a simple off and on, to dim to bright.

adding a dimmer switch to RV
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