LED Bulb Upgrade

I replaced all of mine with the bright white panels and I can't believe how much heat they put off! There is enough heat that the glue in the adhesive backing (to hold the panels in place)failed after short use.
I'm not sure if I got cheap LED's or not but they are going to have to be swapped out for something else.

This is the exact same thing that happened to me. All the adhesive had shriveled up from the heat.

I used these and was very pleased with them.All most a perfect match to the stock 921 color and brightness.
https://www.amazon.com/dp/B00EDFM5QU

I replaced all of mine with the bright white panels and I can't believe how much heat they put off! There is enough heat that the glue in the adhesive backing (to hold the panels in place)failed after short use.
I'm not sure if I got cheap LED's or not but they are going to have to be swapped out for something else.

Almot wrote:
To match the existing old yellow-ish bulbs in color and brightness, you need 300 lumen brightness and color "warm white" or "soft white", with color temperature 3000K.

Some prefer cooler color in workplaces or kitchen counter - those would be 5000-6000K. Try 3000K first, this is what you've been living so far.

I bought this pack of 10, many people here bought from the same guy: $27, pack of 10
Only for a kitchen hood I bought a smaller plate, 12 LEDs per board instead of 24. I don't think that in RV dome light a "cob" LED would work any better than these SMD boards, and boards are cheaper than cobs. For a sconce light you need a "cob".

His Ebay storefront is huge. If you feel like browsing, double check before ordering to make sure that brightness and color are what you need.

As usual with China-direct buy, it took a month to arrive.

There can be such thing as radio interference - some lights generate noise on radio-frequency. Mine don't. Cheaper variety of LEDs usually don't.

Energy consumption - 4 times less than the old bulbs, my batteries are happier now. It says 3W, old bulbs were 18W, so it "should be" 6 times less, but it's 4 times.
If you are on shore power, there isn't much need to replace.

Great info thank you !

Almot wrote:
a lot of tips were posted here on how to attach the board to the dome light - glue, cable ties, etc.

? They come with double-sided foam tape on the back, just peel and stick. Not the best stuff, but worked fine for all but one of mine, and I just used some better quality 3M stuff on that one.

Yes, those boards from DX with pigtail connector and several different adapters were popular at the beginning, and a lot of tips were posted here on how to attach the board to the dome light - glue, cable ties, etc. Now most people prefer boards with built-in plug, like those that I purchased. Pigtails can still be useful where direct plug into receptacle wouldn't work due to particular light shape.

Free shipping to Canada is nice. Not everybody on Ebay does this, though my seller did - now they started charging $3 to Canada, still free to the US. One would think that Canada, being so grossly open to China in every possible way, could have better postal service arrangements with them :)

I replaced mine with ones from dx.com. They're flat panels, and just stick inside the fixture. Those provide more light than the round bulb replacements, because it's all directed down. They're a bit brighter than the original bulbs, and use about 30% of the current. DX also has some smaller ones (#283830), which are a bit dimmer than the bulbs, but only draw ~16% the current. I like the warm white ones.

They include adapters to plug into 921-type sockets. They're a little bit fussy, but work fine once plugged in.

To match the existing old yellow-ish bulbs in color and brightness, you need 300 lumen brightness and color "warm white" or "soft white", with color temperature 3000K.

Some prefer cooler color in workplaces or kitchen counter - those would be 5000-6000K. Try 3000K first, this is what you've been living so far.

I bought this pack of 10, many people here bought from the same guy: $27, pack of 10
Only for a kitchen hood I bought a smaller plate, 12 LEDs per board instead of 24. I don't think that in RV dome light a "cob" LED would work any better than these SMD boards, and boards are cheaper than cobs. For a sconce light you need a "cob".

His Ebay storefront is huge. If you feel like browsing, double check before ordering to make sure that brightness and color are what you need.

As usual with China-direct buy, it took a month to arrive.

There can be such thing as radio interference - some lights generate noise on radio-frequency. Mine don't. Cheaper variety of LEDs usually don't.

Energy consumption - 4 times less than the old bulbs, my batteries are happier now. It says 3W, old bulbs were 18W, so it "should be" 6 times less, but it's 4 times.
If you are on shore power, there isn't much need to replace.

I added to a post months back like this. What I have found is 3 different bulbs for my trailer worked well. The lights above the bed were too bright with the bright white so I swapped them to a warm white. In the living/kitchen area I prefer the brighter bulbs. In the garage I prefer brighter lights. For the scene lights out side I have a combo of bright and warm lights. Sitting by the campfire we like a little light so we don't trip over anything and when we need to set up or light up the area I turn on the big boys.

I went with bright in the main living area. Softer warm in the bunks and bedroom areas.
I think you will need 200 to 300 lumens to get the same light as the 921.
Mine (superbrightleds.com) are a little less and that works fine for me.
lowest price will be direct from China.