Hello all!I have been lurking on here since last year and now I have decided to pull the trigger to sign up.So any who, I have a hybrid (I know, shocker right?)and I would like to replace the current incandescent C921 to LEDs. I'm sure you guys get this question a lot and I have searched through old post. But I would like a replacement that doesn't produce a ton of heat, places on the web that is reliable, and some advice for lumens.

921 LED's come in all types. I prefer flat panels or diskwith 5050 LED's. These type of lights project all the light in direction they are pointed. It will take 12 to 36 LED's to match 921 blubs. 250 to 300 Lumen for overhead lighting. Where you will find the biggest difference is in color (Kevin's). Color Temperature is a measurement in Degrees Kelvin I find colors in the 3,000 range to yellow. Colors in the 7,000 range are to white. I prefer something in the 5,000 range. Many supplies call there colors warm white and bright white.You can buy a lot of cheap LED's off EBAY (where I get mine). But it will require some testing to find what suits you best. I usually find a seller that sells one bulb cheap. Order it, Takes 2-3 weeks for delivery. Then see if it works. Go back to same seller and buy enough bulbs to complete project. Most all bulbs have been less than $5 each.There are some good US sellers that have a good record. I have not had experience with them. I will let others point you to them.

My experience is exactly the same as what RonFisherMan (above) indicated. I ordered an assortment of LED panels from an assortment of vendors (all in china) off eBay. All delivered goods in a couple of weeks. I tested various bulbs in the RV and got DW's approval of one specific panel. Then I ordered a dozen more of that type. Now we can use all the lights we want at night when boondocking without any worry about draining the batteries!

If it's a double bulb fixture, I would suggest something like this for $1.80. I replaced all of my halogen bulbs with this 12-5050 led but in a G4 base.If it's a single bulb fixture, then going with a panel that has more than the 190 lums these have might be a better choice.

Switching all my fixtures to LED panels was the best mod I ever did. More light, less power usage, runs cooler. A win win all the way. Now when dry camping and someone leaves a light on I just laugh it off. I do not understand why they are not standard equipment.

LED REPLACEMENT THREAD This is what I went through a few years back to change out my POPUP Trailer for LED lights. Everyone is different in what they want but I wanted very bright lights that duplicated the incandescent bulbs I was replacing. I did it the hard way and ordered a whole bunch of different ones to see what would work for me in my POPUP trailer. Ended up spending at least $150 before I started listening to the experts here. I had to get something for my Ceiling Lights that was rated around 400-500 LUMENS. All my LEDs have to be WARM WHITE types. All of my LEDs are also the WEDGE TYPE that originally uses the 921 incandescent bulb I tried several companies SUPERBRITE and a whole bunch of other "good deals" and although they all worked in my socket 99% of them was not bright enough for my application. DO NOT ORDER a whole set of any of them until you find the one that works for you. You really have to get something in the 400 LUMENS rating if you want about the same light as you are getting off the original bulb type lights. One of the exports on here told me a 120v 50Watt Incandescent bulb types puts out around 450 lumens of light. You will also want a WARM WHITE LED to duplicate the original bulb type. The COOL WHITE LEDs that put off a BLUEISH light is very hard for me to read from. I first ended up with COMMAND ELECTRONICs PN 170-111 which are 510 LUMEN Boards that stick up inside the DUAL and SINGLE Ceiling light fixtures - They put off excellent light. For my other sockets Porch Light- a couple of Bed Area lights I used the LEDTRAILER ROUND LEDs PN 921-380 which are 380 LUMENS. They are excellant lights as well. All of these LED change outs will drastic reduce my Battery Drain when camping-in-the woods by 80% they tell me. All was going great for me until I did go camping way-back-in-the-woods and found that all of these regulated type of LEDs lights put off a small amount of RFI which in my case interfered with my weak radio and tv reception. With any LED light "ON" my OVER-THE-AIR HDTV reception would totally BLANK OUT. My NOAH WEATHER RADIO reception would not work as well. My Amateur Radio reception was very reduced. All of these Radio/TV units were on OUTSIDE ANTENNAS. When I turned OFF the LED light everything started working as before... NOTE: some people have this problems others don't... This is why it is important to try just ONE changeover and see if you have this problem. To fix this problem and with much help from CamperPaul, SMKETTNER, and KendallP along with a whole host of others I replaced half of my CEILING LED lights with a SMD BOARD 36-1210 type LED 252 LUMENS (Ebay from CHINA @ $4.99) that does not incorporate an ON-BOARD regulator that allows the board to operate between 8-30VDC using what is known as a BUCK REGULATOR circuit. I have tried a couple of these non-regulated boards and they work fine with NO RFI signals being produced. With my DC Voltage range of 13.2 to 14.4VDC they seem to work just fine but the experts tell me their life span may be reduced somewhat as their operating voltage range spec is not that high but at $4.99 each probably no big deal. Since I have the DUAL Ceiling light fixtures that turned on both sides at same time I had to modify my old fixtures to a three way switch version models which allows me to turn on one side or the other or off. I have the American brands with regulators in one side and the China brand without regulators in the other. This way I can switch to the NON RFI type boards when camping off the power grid. Seems to work out pretty good for me doing it this way. Keep in mind all of my incandescent light bulbs are the 921 wedge type so you will need to get the 1141 bulb replacement type... Like said above just order ONE to try out and not get a whole a set for around $200... They might not be what you expect... None of the 15-50 Lumen size LEDs worked for me - even in the bed room directed swivel lights... Way too dim... Changing to LEDs really worked great for us camping off the power grid and they dont get any where near as hot as the incandescent bulbs. Try grabing the old style after it has been on for 10-minutes. My old bulbs had already started burning the plastic holders and turning them brown. I also didnt get the LED diffusers with the first round of LEDs. One of those companies I listed has the replacement diffusers lens available which really make a big difference. This spreads the LEDs light beams out better then the original light assy has in them. Good luck...

LED replacements for 921 bulbs | Good Sam Community

Alfred622
Explorer
Apr 13, 2013
My experience is exactly the same as what RonFisherMan (above) indicated. I ordered an assortment of LED panels from an assortment of vendors (all in china) off eBay. All delivered goods in a couple of weeks. I tested various bulbs in the RV and got DW's approval of one specific panel. Then I ordered a dozen more of that type. Now we can use all the lights we want at night when boondocking without any worry about draining the batteries!
ronfisherman
Moderator
Apr 13, 2013
921 LED's come in all types. I prefer flat panels or diskwith 5050 LED's. These type of lights project all the light in direction they are pointed. It will take 12 to 36 LED's to match 921 blubs. 250 to 300 Lumen for overhead lighting. Where you will find the biggest difference is in color (Kevin's). Color Temperature is a measurement in Degrees Kelvin I find colors in the 3,000 range to yellow. Colors in the 7,000 range are to white. I prefer something in the 5,000 range.
Many supplies call there colors warm white and bright white.
You can buy a lot of cheap LED's off EBAY (where I get mine). But it will require some testing to find what suits you best. I usually find a seller that sells one bulb cheap. Order it, Takes 2-3 weeks for delivery. Then see if it works. Go back to same seller and buy enough bulbs to complete project. Most all bulbs have been less than $5 each.
There are some good US sellers that have a good record. I have not had experience with them. I will let others point you to them.

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