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Anybody use LED 7440 bulbs for turn signals?

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Old Nov 21, 2007 | 10:09 AM
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csdstudio's Avatar
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Anybody use LED 7440 bulbs for turn signals?

I've installed some but they seem a little on the dull side. They were advertised as "super bright 18 bulb LEDs" or whatever.

I just thought they'd be so much brighter than they are, but the stock brake lights are at least twice as bright. They are almost as bright as the rear lights on half brightness (i.e. lights on but no brake applied). Are there any good LED turn signals that are BRIGHT like the stock brakes just like other LED equiped cars? Thanks guys.
 
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Old Nov 21, 2007 | 07:40 PM
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Originally Posted by csdstudio
I've installed some but they seem a little on the dull side. They were advertised as "super bright 18 bulb LEDs" or whatever.

I just thought they'd be so much brighter than they are, but the stock brake lights are at least twice as bright. They are almost as bright as the rear lights on half brightness (i.e. lights on but no brake applied). Are there any good LED turn signals that are BRIGHT like the stock brakes just like other LED equiped cars? Thanks guys.
What color did you buy?

I think red LED's come out to be a bit brighter than white LED's.
 
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Old Nov 21, 2007 | 07:47 PM
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if u actually read whats said on the website.. it says "LED bulbs are generally not as bright as standard incandescent bulbs, they have many advantages over filament bulbs (longer life, faster on/off times, lower power consumption, more vivid colors) but brightness is not one of them.
They are generally not as bright but some of them with large numbers of LEDs, will appear brighter than filament bulbs.
As an exception, our new 3 Watt Luxeon LED car bulbs are as bright or brighter than most standard filament car bulbs.
The light is distributed differently so they can appear brighter in some applications and not as bright in others, it depends on the size and shape of the bulb housing and reflector.
Most LED bulbs emit light like a flashlight, all out the end. Regular filament bulbs emit light from the end and all sides, so they will be better suited for some lighting applications than LED bulbs.
This is the same reason why we do not rate LED car bulbs in lumens or watts, the numbers would be deceptively low because the light is measured from all sides and the end on standard filament bulbs but only from the end on LED bulbs"
 
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Old Nov 25, 2007 | 01:10 AM
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my leds from superbright leds.com sucked, one led, little by little kept going out
 
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Old Nov 25, 2007 | 01:45 AM
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superbrightleds.com FTL
frickinbrite.com (vleds.com) FTW
 
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Old Nov 27, 2007 | 03:03 PM
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Anyone know a source to purchase these bulbs from?

http://ct-emitter.com/cttc-car_product-En.htm

Looks like the 7440 RED outputs 140 lumens, that's 3 times the brightest "SUPERBRIGHT" LEDs found around the web that quote 8000mcd output which = only ~50 lm.
 
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Old Nov 28, 2007 | 10:12 AM
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any pics??
 
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Old Dec 5, 2007 | 06:17 PM
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their too dim because leds draw too much current,you need to put a resistor on the power wire.
 
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Old Dec 6, 2007 | 12:16 AM
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LED's drawing too much current? they draw a fraction of incadescent bulbs... and i dont believe that has any effect on how bright they are.

I think a Load resistor is only needed if you notice the flashers blinking too rapidly.
 
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Old Dec 25, 2007 | 05:22 PM
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Did you have to use a resistor or did the lights flash normally?
 
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Old Jan 10, 2008 | 12:30 PM
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i know if you get leds for your blinkers they will blink faster due to the leds not needing as much power, but do you have to install a resistor or can you just put them in and have them blink faster? cause i really dont care how they blink
 
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