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Old 02-21-2012, 11:06 AM   #1
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Toad LED bulb replacements

Has anyone replaced their stock ( mine are 3157's) bulbs with LEDs to obtain brighter signals? I am bothered that in the day light, my Jeep Cherokee turn/brake lights are not bright enough. if you have, could you advise how many LEDs in the bulb you used?

Thanks,

Jim aka relgel
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Old 02-21-2012, 09:02 PM   #2
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These PIAA bulbs claim to be ultraibright, but I haven't seen them in action.

Amazon.com: PIAA 19295 3157 Xtreme White Miniature Bulb - Pack of 2: Automotive
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Old 03-23-2013, 02:38 PM   #3
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in stock?

Looks like from the suppliers info on Amazon
delivery may take a month. Must be shipping from China.

Anyone know of an outfit that stocks them on hand?


How about price. Some I saw where $50 per bulb.

Have they come down any?
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Old 03-25-2013, 04:01 PM   #4
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I've done some LED tailight conversions enough to recommend the following:
  1. Use a "tower" style bulb that will illuminate the entire taillight housing.
  2. LED color should be the same as the lens color - so red LEDs for red tail/brake lights. If you use straight white LEDs the taillights will have a purplish hue since typical white LEDs have a blueish tint (red+blue=purple).
With that in mind I would look for something like these:
3157 3156 High Power Samsung LED Red Turn Signal Brake Tail Stop Light Bulbs | eBay

or these:
Pair GP Thunder 3157 3057 4157 SMD 36 5mmx5mm LED Lights Bulbs Red | eBay

No guarantee on either as I have not used them. Just a guideline.

Best of luck!
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Old 03-25-2013, 04:42 PM   #5
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Quote:
Originally Posted by Nick-B View Post
I've done some LED tailight conversions enough to recommend the following:
  1. Use a "tower" style bulb that will illuminate the entire taillight housing.
  2. LED color should be the same as the lens color - so red LEDs for red tail/brake lights. If you use straight white LEDs the taillights will have a purplish hue since typical white LEDs have a blueish tint (red+blue=purple).
With that in mind I would look for something like these:
3157 3156 High Power Samsung LED Red Turn Signal Brake Tail Stop Light Bulbs | eBay

or these:
Pair GP Thunder 3157 3057 4157 SMD 36 5mmx5mm LED Lights Bulbs Red | eBay

No guarantee on either as I have not used them. Just a guideline.

Best of luck!
At some point, I'd also like to play around with retrofitting the tail lamps using LEDs. I've heard that installation of resistors are almost always needed when retrofitting with an LED bulb. Where did you wire in the resistors? Or did you need them at all? Thanks.

-harry
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Old 03-25-2013, 06:54 PM   #6
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To my knowledge the resistor would be for the blinker (turn signal) to operate. I think some LED's may have them installed if they are made for that reason. (turn signals)

Here's a good site with any LED you'll ever need.
http://www.superbrightleds.com/
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Old 03-25-2013, 07:27 PM   #7
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My beginning bit of research so far suggests LEDs with a wide operating voltage (e.g. 10v-30v) to allow for voltage fluctuations. Seems like there may be a wide range of quality (or just hype?) out there. Apparently LEDs good and long lasting for tow dollies though. R
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Old 03-25-2013, 07:29 PM   #8
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Quote:
Originally Posted by legryz View Post
To my knowledge the resistor would be for the blinker (turn signal) to operate. I think some LED's may have them installed if they are made for that reason. (turn signals)

Here's a good site with any LED you'll ever need.
LED Lights, Bulbs & Accessories - SUPER BRIGHT LEDS
The LED units that plug in to replace an incandescent bulb usually have a resistor built in. It is when people try to wire a single or group of LEDs that they run into premature burn out because they overpower the LED without a current limiting resistor. The bulbs listed in the links above are listed as 'direct plug in replacement' and have a 1 year guarantee. I imagine they have a built in resistor.

The resistor needed for turn signal LEDs is to have enough current draw to trigger the blinker.
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Old 03-26-2013, 02:24 PM   #9
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Quote:
Originally Posted by amanda_h View Post
I've heard that installation of resistors are almost always needed when retrofitting with an LED bulb. Where did you wire in the resistors? Or did you need them at all? Thanks.
Best way to handle the blinker issue is to use a new flasher unit that works with the low draw LEDs. Resistors are (IMHO) a poor bandaid and another point of failure.
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Old 03-26-2013, 02:51 PM   #10
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I tried a few LED replacement bulbs, and they were quite a bit dimmer than the stock incandescent bulbs, so I went with these:
Set of 2 4" LED Amber Stop Tail Turn Trailer Mounting Light Kit : Amazon.com : Automotive

They are mounted inside the rear window of my SUV with suction cups (the kind that are sold for hanging things inside a shower enclosure). They are very bright and low current draw, and have been durable for the last 2 years.
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Old 03-26-2013, 03:45 PM   #11
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The problems encountered are not bulb related, but diode. Using Leds without a diode produces a much brighter light. Sadly, most toad lighting systems incorporate some type of diode in order to prevent feedback into the toads electrical system. That is where the reduction in brilliance takes place.
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