Published on February 1st, 2011 | by Jules Yap


Convert LED Wall Light for use in RV

Materials: Jansjo

Description: I fell in love with the Jansjo LED wall light and I wanted to use it in my RV. It makes the perfect bedroom reading light, and since it’s based on a light-emitting diode (LED) it’s low power and you can’t burn yourself by accidentally touching it.

Unfortunately, it doesn’t run on a standard voltage. The special power adapter is built into the cord which plugs into the wall so there’s no way to use it while camping or in a trailer. No problem.

In order to accomplish this hack you will need a Janslo lamp, a sub-miniature toggle switch ($3.00 from Radio Shack), a 1-watt LED power driver ($3.00 from Sure Electronics on eBay), and the ability to solder.

Cut the cord off the lamp and remove the little plastic screw that holds the cord in place. Unthread the power cord from the hole and clip off the white connectors, using care to leave the remaining wires as long as possible.

Drill out the hole that the cord went through using a 1/4″ twist drill. Bend the contacts on the switch to be as flat as possible, slip the switch into the hole from the inside, and epoxy it in place. When the epoxy has set, you are ready to attach the cord and wire up the switch.

Solder the wires to the switch as shown using a piece of the old lamp cord. Polarity is very important with this project. You do not want to get the leads reversed. If you look carefully at the lamp cord, you will notice that one side of it is marked with little black dashes. Connect this side to the silver wire on the lamp. Connect the other side to the switch as shown. Connect the white wire from the lamp to the other side of the switch.

You are now ready to wire up the LED driver.

Strip a 1/4″ of insulation off the wires to the lamp and attach them to the LED+ and LED- terminals on the driver board using the screw terminals. Once again, mind the polarity. The wire with the black dashes goes to the LED- terminal. The other one goes to LED+.

Attach the other side of the driver board to the 12-volt wires in your RV, being careful to observe the polarity. If you hook it up backwards, you will destroy the driver board (and possibly burn yourself).

That’s it! You now have a very bright, very efficient reading light. It uses less than 1/10th the power of a standard 12-volt light bulb (150mA vs 2000mA).

~ Rick Scherle, San Francisco, CA

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The Author

Jules Yap

"I am Jules, the engine behind IKEAHackers and the one who keeps this site up and running. My mission is to capture all the wonderful, inspiring, clever hacks and ideas for our much loved IKEA items".

13 Responses to Convert LED Wall Light for use in RV

  1. Corina says:

    My plug for the led driver for ikea under cabinet lights keeps slipping out. I am hoping I can strip the wires of the plug, open up the led driver and attach the wires inside the led driver permanently. I just need a bit of encouragement or warning of things to be careful of out before I get started. Anyone one there able to help with this?

  2. IT_Guy says:

    They only sell the table lamp version of Jansjo LED light ($9.99) but I am still doing this for my Airstream trailer. I bought the 1 watt driver from Sure Electronics on eBay as instructed. I had to solder on the screw mount though. Luckily I’ve soldered in a previous life. I also skipped the switch instructions, and decided to install a wall switch instead (running wires in the wall). Everything worked like a charm though. The light is perfect for night time reading.

    Thanks Jules!! Great post and a great idea!

  3. The lighting technique is quite difficult to understand that I can’t change them actually.However, the benefit of saving energy and money is obvious.

  4. furniture shop melbourne says:

    LED lighting is not just cost effective solution, but also helps to save energy.Apart from that,the safety of using LED lighting is another advantage.This is also why IKEA hackers can convert them.

  5. removalists devonport says:

    LED is becoming the best choice for end users who want to buy some lighting.In addition,LED lighting can be adjusted for varieties of purpose such as changing color.

  6. The design of this light is simple but user friendly.LED saves lots of energies and save the money from the electricity bill you have to pay every month.That’s really great to have one in house.

  7. Munjal says:

    I thought the Janso LED lamp was 3 Watts? Aren’t you losing some output by using the 1Watt DC-DC driver?

  8. Marlan at RV52 4 RV lighting says:

    My link has all sorts of lighting needs that could challenge you. Probably the most interesting need might be something in the hallway which would motion-sense and turn on when you need it. Like a night light, but only when you are around, and not too bright either.


  9. Sarah says:

    nice hack!

  10. jo says:

    sorry, but what’s a rv?

  11. Anonymous says:

    …or you could buy a led torch or a led reading lamp using AA/AAA batteries for a few bucks, in just about any larger shop…

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