Looking to replace car tail light bulbs with LED

53 posts / 0 new
Last post

Pages

Vraklower
Offline
Last seen: 7 months 1 week ago
Joined: 11/20/2012 - 23:15
Posts: 39
Location: Montreal
Looking to replace car tail light bulbs with LED

Hi everyone,

I would like to replace the tail light bulbs of my car with LED. I like the “instant” on effect of LED.

My stock bulbs are: 21/5watts bulb 7443

Any recommendations? There’s a ton of bulbs on ebay and DX sites. But not sure if they’re going to be “bright” enough.

Thank you

keltex78
keltex78's picture
Offline
Last seen: 1 day 9 hours ago
Joined: 03/18/2011 - 10:15
Posts: 3705
Location: Texas

I haven't tried yet. Is the 7443 the same as a T20 base?

http://dx.com/s/t20?category=712

I'm going to be looking for some suitable LED bulbs for my scooter to try to save a few amps on the charging circuit and hopefully, boost visibility...


Keepin’ the “B” in BLF

Don wrote:
It sounds like the XM LEDs won’t really be suitable for flashlight use. Pity…

Justice
Offline
Last seen: 6 years 3 months ago
Joined: 01/18/2013 - 16:34
Posts: 8
Location: CA

Wanna stay legal? By an approved high level LED stop light.

PilotPTK
Offline
Last seen: 6 years 4 months ago
Joined: 09/04/2011 - 21:53
Posts: 1736
Location: Michigan, USA

Justice wrote:
Wanna stay legal? By an approved high level LED stop light.

Approved by whom?

I am currently extremely busy with work. Please do not expect a response from me quickly. I will be dropping in as time permits, but the amount of time I can dedicate to responding to topics and PMs is very limited.

Pulsar
Pulsar's picture
Offline
Last seen: 5 days 8 hours ago
Joined: 07/29/2011 - 00:41
Posts: 5840
Location: Maine

this is illegal. locked. banned. 

 

jus kidding Cool

Justice
Offline
Last seen: 6 years 3 months ago
Joined: 01/18/2013 - 16:34
Posts: 8
Location: CA
PilotPTK wrote:

Justice wrote:
Wanna stay legal? By an approved high level LED stop light.

Approved by whom?

Transport Canada.

Motor Vehicle Safety Regulations (C.R.C., c. 1038) Lighting System and Retroreflective Devices (Standard 108)

108. (1) Every passenger car, multi-purpose passenger vehicle, truck, bus, motorcycle and trailer shall be equipped with the lamps, retroreflective devices and associated equipment required by Technical Standards Document No. 108, Lamps, Reflective Devices and Associated Equipment (TSD 108), as amended from time to time.

(4) Lamps, retroreflective devices and associated equipment on a vehicle may conform to the applicable SAE standards and recommended practices contained in the 1994 SAE Handbook instead of the applicable SAE standards and recommended practices referred to in this section or TSD 108.

S6.1 SAE Standards and Recommended Practices subreferenced by the SAE Standards and Recommended Practices included in Tables I and III and paragraphs S5.1.4 and S5.5.1 are those published in the 1970 edition of the SAE Handbook, except that the SAE standard referred to as “J575” is J575e, Tests for Motor Vehicle Lighting Devices and Components, August 1970, for stop lamps designed to conform to SAE Standards J586c, J586 FEB84 and J1398 MAY85; for tail lamps designed to conform to SAE Standards J585d and J585e; for turn signal lamps designed to conform to SAE Standards J588e, J588 NOV84, and J1395 APR85; and for high-mounted stop lamps designed to conform to SAE Recommended Practice J186a. The reference in J585e to J256 does not apply. For headlamps other than motorcycle headlamps, unless otherwise specified in this TSD standard, the version of SAE Standard J575 is DEC88, and the version of SAE Standard J602 is OCT80. The definition of “optically combined” in SAE Information Report J387, Terminology – Motor Vehicle Lighting NOV87, applies to that term as used in J586c and J588e.

S6.2 Requirements of SAE Standards incorporated by reference in this TSD standard, other than J576b and J576c, do not include test for warpage of devices with plastic lenses.

S6.3 The term “functional lighted lens area” in any SAE Standard or Recommended Practice incorporated by reference or by subreference in this TSD standard has the same meaning as the term “effective projected luminous lens area”.

Pinetreebbs
Pinetreebbs's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 07/29/2012 - 10:39
Posts: 588
Location: South Carolina, USA, Earth

Whoa! Thought I was back on that ‘other’ forum. Shocked

Pulsar wrote:

this is illegal. locked. banned. 

 

jus kidding Cool

Pinetreebbs
Pinetreebbs's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 07/29/2012 - 10:39
Posts: 588
Location: South Carolina, USA, Earth

I have had good luck with regulated lights like this:

http://www.tmart.com/T10-1210-8-LED-Canbus-Car-Light-Bulbs_p143179.html

Others just have a little resistor and burn out fast.

Vraklower
Offline
Last seen: 7 months 1 week ago
Joined: 11/20/2012 - 23:15
Posts: 39
Location: Montreal

Pinetreebbs wrote:
I have had good luck with regulated lights like this:

http://www.tmart.com/T10-1210-8-LED-Canbus-Car-Light-Bulbs_p143179.html

Others just have a little resistor and burn out fast.

Were they bright enough?

Pinetreebbs
Pinetreebbs's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 07/29/2012 - 10:39
Posts: 588
Location: South Carolina, USA, Earth

Vraklower wrote:
Pinetreebbs wrote:
I have had good luck with regulated lights like this:

http://www.tmart.com/T10-1210-8-LED-Canbus-Car-Light-Bulbs_p143179.html

Others just have a little resistor and burn out fast.

Were they bright enough?

Yes, very bright, however they are license plate lights. I do have a pair of brake/turn signal led cluster lights, but I got them at an Auto Zone store several years ago. They still work fine, but I have no idea who made them.

texaspyro
Offline
Last seen: 11 months 5 days ago
Joined: 04/29/2011 - 12:43
Posts: 4593

Pinetreebbs wrote:
I have had good luck with regulated lights like this:

http://www.tmart.com/T10-1210-8-LED-Canbus-Car-Light-Bulbs_p143179.html

Others just have a little resistor and burn out fast.

Uhhh, that TMART bulb has no regulation, just resistors.

Also, note that a lot of modern cars have dead bulb sensors and a lot of LED bulbs don’t work with them… they say that the bulb is dead.

Pinetreebbs
Pinetreebbs's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 07/29/2012 - 10:39
Posts: 588
Location: South Carolina, USA, Earth

texaspyro wrote:
Pinetreebbs wrote:
I have had good luck with regulated lights like this:

http://www.tmart.com/T10-1210-8-LED-Canbus-Car-Light-Bulbs_p143179.html

Others just have a little resistor and burn out fast.

Uhhh, that TMART bulb has no regulation, just resistors.

Also, note that a lot of modern cars have dead bulb sensors and a lot of LED bulbs don’t work with them… they say that the bulb is dead.

My bad, other bulbs I tried had a small (wired) resistor in series with the LED bulbs. I just assumed the chips were some sort of regulators since these light have lasted a several months while the others burned out in a week or two. I take it they are resistors? (I am not an electronics expert.)

Vieplis
Offline
Last seen: 4 years 6 months ago
Joined: 03/30/2012 - 03:27
Posts: 123
Location: home

The part marked 111 is a resistor. Connected in parallel to all the rest, 1.8W of waste just to make sure the dead bulb sensor will recognize the device as a bulb. Must be rather hot.
Two parts marked 181 are resistors. In series with LEDs.
Several months is not “long service life”.

TrakTuned
TrakTuned's picture
Offline
Last seen: 6 years 1 week ago
Joined: 09/21/2012 - 21:30
Posts: 422
Location: So-Cal

LED’s in vehicles are a bad idea when using Plug N’ Play bulbs. If you must put LED’s in, retrofit a custom board in.

You can use 5mm superflux or plain 5mm made by reputable companies with just a simple v-reg to stabilize voltage. 9v vregs are generally best as 12v will cause less output when the alt isnt running.
Osram, Hp, Phillips they all make good ones. Red-orange is generally OEM as it has better visibility when compared to Red.

Copper holed bread board, Leds, Vreg, Resistors, Soldering supplies, and some time will yield MUCH better results than ANY plug and play bulb.

The best plug and play bulb is the ELEF bulbs that contain a single high power LED with a 360 degree optic to act like a filament. With the beam pattern out the sides, it can actually use the reflector and at a much better efficiency compared to a ton of misplaced little LED’s.

I replace my center high stop light (3rd brake) with some 5mm superflux ( about 30). Took me several hours for trial and error and results are good! Just used bread board to mount the through hole leds and a 9v reg to hold voltage steady, and designed my circuit around the 9v threshold.

BLF members are hilarious:
“That’s like saying “My car has top-speed of 200k millimiles per hour”. Why not to just say 10 Ah?”

Pinetreebbs
Pinetreebbs's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 07/29/2012 - 10:39
Posts: 588
Location: South Carolina, USA, Earth
Vieplis wrote:
The part marked 111 is a resistor. Connected in parallel to all the rest, 1.8W of waste just to make sure the dead bulb sensor will recognize the device as a bulb. Must be rather hot. Two parts marked 181 are resistors. In series with LEDs. Several months is not “long service life”.

Thanks for your response. They run cooler than the incandescent bulbs they replaced. However the original bulbs were very hot, easily burning my fingers when replacing one that was still working. Smile I will buy some spare incandescent bulbs to replace the LEDs when they die.

mattthemuppet
Offline
Last seen: 2 days 5 hours ago
Joined: 01/04/2012 - 16:20
Posts: 1273
Location: WA
Pulsar wrote:

this is illegal. locked. banned. 

 

jus kidding Cool

that made me laugh. I don’t even know why they have that sub forum when all they do is lock threads and ban users for asking questions.

I’d go with an LED high brake light if you’re going in that direction, but find out what the local laws are first. I don’t think it’s a trivial undertaking and you’d want to make sure it’s not going to blind drivers behind you, but it’ll be interesting to see what you come up with.

BIGWOOD
BIGWOOD's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 11/17/2011 - 16:16
Posts: 701
Location: Vancouver, BC

Vraklower wrote:
Hi everyone, I would like to replace the tail light bulbs of my car with LED. I like the "instant" on effect of LED. My stock bulbs are: 21/5watts bulb 7443 Any recommendations? There's a ton of bulbs on ebay and DX sites. But not sure if they're going to be "bright" enough. Thank you

How bright do you want it?  I put some of these 7.5W & 11W ones on my Pajero in the 1156 & 1157 format (turning assist, front/back indicator, brake/parking, & reverse lights).  My reverse lights using the 11W 1156 bulb looks as bright or brighter than my daytime running lights.  Cool thing I like about these are that they have amber, red, & white LEDs so the coloured lenses on your car doesn't filter out the light on a white bulb.

http://www.aliexpress.com/store/322554/search?SearchText=7443

tkmckay
Offline
Last seen: 3 months 3 weeks ago
Joined: 07/15/2012 - 10:52
Posts: 288
Location: Canada

BIGWOOD wrote:

Vraklower wrote:
Hi everyone, I would like to replace the tail light bulbs of my car with LED. I like the “instant” on effect of LED. My stock bulbs are: 21/5watts bulb 7443 Any recommendations? There’s a ton of bulbs on ebay and DX sites. But not sure if they’re going to be “bright” enough. Thank you

How bright do you want it?  I put some of these 7.5W & 11W ones on my Pajero in the 1156 & 1157 format (turning assist, front/back indicator, brake/parking, & reverse lights).  My reverse lights using the 11W 1156 bulb looks as bright or brighter than my daytime running lights.  Cool thing I like about these are that they have amber, red, & white LEDs so the coloured lenses on your car doesn’t filter out the light on a white bulb.


http://www.aliexpress.com/store/322554/search?SearchText=7443


Thanks for the link BIGWOOD. That is the hardest part about trying to find decent replacement led’s for you car is sifting through all the low quality crap that is out there in order to find quality items that actually perform as good or better than stock.
ChiggerPepi
ChiggerPepi's picture
Offline
Last seen: 1 week 18 hours ago
Joined: 08/20/2012 - 19:32
Posts: 627
Location: Big Island, Hawaii

I’ve had very limited success with this, the only LED lights still on my car are the liscence plate lights and the dome light.

I have a 99 Ford Explorer, and I thought there would be no issues with the brake lights being LED, as there is no bulb failure warning system and they don’t blink. I was wrong. At first it appeared to work, I was happy, and the LEDs were almost as bright as the incans. Then a week or two later I follow my wife home from the beach, (it’s her car) and I see a stuck on turn signal light. I didn’t touch the turn signals! After fiddling with it, I confirmed it was glitchy, so out came the LEDs.

mattthemuppet
Offline
Last seen: 2 days 5 hours ago
Joined: 01/04/2012 - 16:20
Posts: 1273
Location: WA

I have heard of turn signals in particular needing some kind of ballast to work properly when bulbs are swapped for LEDs. Something to do with the relay not working properly at a lower load. That might also be why a blown indicator bulb causes the the one at the other end of the car to flash at twice the rate. That’s just a guess though.

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 1 year 2 months ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

I’ll be using a 12V to 5V 10A DC to DC converter to supply power to various driver boards for just the stop, turn, and tail lights. The vehicle is an pedal electric ebike with a 12v supply for the existing lights. The headlights will be 2 sets of 3 x XML in series with a high voltage modded driver and low value resistor(.5 ohm, 5W) with Hi/Low. The stop lights may have the existing activator control the Vdd pin on a single mode board. Still a lot of unknowns (no published manual) yet so will need to work one set of lights at a time.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

travishu
travishu's picture
Offline
Last seen: 6 years 9 months ago
Joined: 07/09/2013 - 05:13
Posts: 1
Location: Shenzhen

LED’s work best on a specific amount of voltage. White bulbs need between 3.6 and 4.0 Volts. In you push more voltage through them they will produce more light, but also produce heat that can damage the bulb. Heat sinking draws the extra heat away from the bulb, helping to protect it. If it gets too hot, something called “thermal runaway” can happen.

LightingEver

gracedan
gracedan's picture
Offline
Last seen: 2 years 4 weeks ago
Joined: 08/22/2013 - 23:47
Posts: 3
Location: Road Mikal 3, London, UK
travishu wrote:
LED’s work best on a specific amount of voltage. White bulbs need between 3.6 and 4.0 Volts. In you push more voltage through them they will produce more light, but also produce heat that can damage the bulb. Heat sinking draws the extra heat away from the bulb, helping to protect it. If it gets too hot, something called “thermal runaway” can happen.

There are professional LED lights for Cars, such as High quality 12 volt LED car lights. 1156, 1157, T10, T20 and Festoon LED bulbs are available. You can find license plate light, brake light, tail light, turning light and so on.

Join me via Twitter @LizPing Smile

Adam706
Adam706's picture
Offline
Last seen: 1 month 3 weeks ago
Joined: 01/23/2013 - 23:31
Posts: 232
Location: GA

I have a pair of LED switchbacks off of ebay. Glow white with parking lights on then flash amber with the blinker on.
This site http://www.superbrightleds.com has a lot different types.

Werner wrote:
I have no pets so I have too pee on the carpet myself…

“this tiny flashlight was the one that shined best”
Fritz t. Cat
Fritz t. Cat's picture
Offline
Last seen: 1 year 6 months ago
Joined: 05/07/2013 - 00:33
Posts: 2535
Location: Si Valley

I have noticed two problems with other cars’ tail lights. Some are too bright and some are speckled. The former seems to be that laws have not caught up with technology yet. The latter is a problem in the led manufacture process. The material is too homogeneous, so the spread of wavelengths is too narrow.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Masejoer
Offline
Last seen: 4 months 1 hour ago
Joined: 09/22/2011 - 20:01
Posts: 71
Location: Oregon

I don’t know of any bulbs that are bright enough to be good replacements, that also don’t get too hot. Reliability and high output just don’t go hand in hand with pnp bulbs, and the fill is terrible. None of the bulbs have enough effective heatsinking for the desired output. I found that I could only be happy with a custom install. Over the last 3 years of messing with LED flashlights, mostly because of this forum, I found it easy enough to fab my own. Just like HID swaps (retrofits really are needed), I wouldn’t just drop in a bulb in place of a stop lamp or signaling lamp (the others can run fine though).

Of course, as with flashlights, you also can almost never have enough backup lighting:

Compared to stock 27W incandescent bulb. All stock bulbs were 27W – backup and stop.

60W of backup lighting, 40W of brake lighting and they stay under 40C above ambient when running for hours, without airflow. You know you want to go all-out – LED’s run cool, use quality drivers, and are of a desirable color temperature. :bigsmile:

adnj
Offline
Last seen: 2 months 3 weeks ago
Joined: 08/12/2012 - 22:04
Posts: 479

There is a resistance sensor in the turn signal lamp circuit. An open circuit triggers the high rate of flash. Retrofitting LEDs is a great idea if the light output is a good match. Dim or super bright running lights, turn signals and back-up lamps are just as illegal as one that does not function in NAFTA and EU countries. And maybe some more. The best LED retrokits that I’ve seen include a lamp assembly, driver and replacement lenses but they aren’t cheap. Nice if you have a need to replace the lenses anyway.

Look at some of the new lamps on the road – the best way to get them to work properly is an array of emitters.

mattthemuppet wrote:
I have heard of turn signals in particular needing some kind of ballast to work properly when bulbs are swapped for LEDs. Something to do with the relay not working properly at a lower load. That might also be why a blown indicator bulb causes the the one at the other end of the car to flash at twice the rate. That’s just a guess though.
mattthemuppet
Offline
Last seen: 2 days 5 hours ago
Joined: 01/04/2012 - 16:20
Posts: 1273
Location: WA
adnj wrote:
There is a resistance sensor in the turn signal lamp circuit. An open circuit triggers the high rate of flash.

thanks, I didn’t know that!

carl125
Offline
Last seen: 6 years 8 months ago
Joined: 09/09/2013 - 23:39
Posts: 1
Location: Los Angeles, CA

In my experience LED tailight bulbs typically last less than a year. The wires in their bases have been the weak spot on the ones I’ve bought from lightingnext

That said, I just replaced them again. Maybe this batch will hold up better.

Why do I keep replacing them with LEDs when I’ve had such poor luck? LEDs light up a split second before incandescent brake light bulbs do. When you see that split second difference in real life you’ll see how significant it is. Even at 30mph you go over 4 feet in less than a 10th of a second.

Fritz t. Cat
Fritz t. Cat's picture
Offline
Last seen: 1 year 6 months ago
Joined: 05/07/2013 - 00:33
Posts: 2535
Location: Si Valley

Incandescent bulbs burn out often, so they are usually easy to reach, apparently intended for owner replacement with possible exceptions. This will probably change as leds become integrated.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Bort
Bort's picture
Offline
Last seen: 2 months 4 days ago
Joined: 06/01/2012 - 17:15
Posts: 7460
Location: Holding the proverbial flashlight
carl125 wrote:
Why do I keep replacing them with LEDs when I’ve had such poor luck? LEDs light up a split second before incandescent brake light bulbs do. When you see that split second difference in real life you’ll see how significant it is. Even at 30mph you go over 4 feet in less than a 10th of a second.

this is why i want to go with LED, but i would want better then or at least equal to incandescent bulb life, and decent quality, i won’t risk a car fire due to cheap dangerously made bulbs

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

Pages