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Old 04-20-2014, 10:47 PM   #1
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LED brightness

I know this comes up a lot but I don't quite understand how to compare the new LED's to a standard incandescent. Looking to replace ceiling fixture bulbs.

Found these on ebay and thinking they may not be good for the price.

20 T10 194 921 168 W5W 24 1210 SMD LED Warm White RV Landscaping Light Lamp Bulb | eBay

Any input here is appreciated. Thanks.
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Old 04-21-2014, 05:22 PM   #2
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They are only 100 lumens. Not very bright. You should look for a minimum of 200 lumens and more is even better. If you are looking for a LED to read by you will need to be up in the 400 to 500 lumen range. Don't be confused by the number of LEDs on the lamp because some times fewer LEDs produce a brighter light. If you plan to replace halogens with LEDs make sure you have the right base. The ones you show are a "wedge" base. I would imagine your rig also has lamps with "bayonet" base that is a twist and lock. Two styles for that also, horizontally opposed pins and horizontally offset opposed pins.

The short message is look for how many lumens it has. Some rate it by watts and I am not into that comparison. I'm sure there is a chart to cross reference them also.

Last, there are different colors. All white lamps are not necessarily white. There is cool white and warm light and other colors in between. Without a little research I can't tell you the difference in color but believe me there IS a difference. Some may have a slight blue tint which may be objectionable or maybe not.

Shop around on Ebay and be patient. You will find the same LEDs for vastly different prices. Check their feedback also. I like to have feedback to be north of 95 and check what kind of negative feedback they get.
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Old 04-21-2014, 07:24 PM   #3
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Thank you for the helpful info. I will certainly shop around. There are way to many out there. I,ve also been told there are some that go at a 6000k rating that would be bright. Might look at some of those. Thanks.
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Old 04-21-2014, 07:33 PM   #4
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I'm a fan of lumens too. Tell me what light it puts out at what voltage spec, watts refers to actual power consumed, but comparing an LED to an incandescent with watts is impossible, if watts are stated it's usually an estimate in the "This is equal output to a 100 watt bulb"

I found on google you can type in the bulb you wish to replace and usually you can find out what that incandescent puts out, then you can find an LED to match.

Sylvania 34761 - 194 Miniature Automotive Light Bulb at eLightBulbs.com
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Old 04-21-2014, 07:43 PM   #5
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just bought some good 320 lums and the wife said they are too bright to look towards per her.
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Old 04-21-2014, 07:53 PM   #6
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Old 04-21-2014, 08:03 PM   #7
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Amazon.com: GRV T10 Wedge 921 194 25-3528 SMD LED Bulb lamp Super Bright Warm White DC 12V Pack of 10: Automotive
I got these and am really happy with them. About equal in brightness to original bulbs and same "whiteness". Not the blue hue that some LEDs have.
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Old 04-22-2014, 08:31 PM   #8
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That is not a bad price for 10 pieces, about $2.70 each. I might add one thing about wedge base LED's. They DO have polarity so if they don't work when you plug it in just turn it over, 180 degrees. I replaced all the marker lights on my old TT with LED's. I had a couple spares but don't know where I put them to remember how many LEDs were on it. I do know I checked the length and the ones I got just barely went under the lens but worked great. They look similar to what you got.
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Old 04-22-2014, 09:01 PM   #9
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I just did the LED upgrade to my trailer this last weekend. I found the ones in the link below. Not too pricey did my whole trailer for about $60. Let me tell you, I was kinda worried about ordering a crap product, but no disappointment here.

4X T10 921 194 RV Trailer 12V LED Lights Bulbs 42 SMD Xenon 6000K White | eBay
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Old 04-22-2014, 09:13 PM   #10
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Here's a pic.
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