LED Tail lights

Amber double filament
https://www.amazon.com/dp/B071FB824J?psc=1&ref=ppx_yo2_dt_b_product_details

Red double filament
https://www.amazon.com/dp/B01MY4T4BU?ref=ppx_yo2_dt_b_product_details&th=1

White single filament
https://www.amazon.com/dp/B0721FNCWP?psc=1&ref=ppx_yo2_dt_b_product_details

I've got incandescent blinkers in my Ramco mirrors so didn't have to use
the LED Blinker
https://www.amazon.com/dp/B0795CS5M4/

bdub

> I'd like to make some custom LED taillights. I need some SMD LEDs that are
> the right color and bright and probably certified for automotive taillight
> use.
>
> anyone out there have any knowledge of sourcing such beasts?
> Everything else looks fairly straight forward
>
> Keith Vasilakes
> Mounds View MN
> 76 exRoyale
> MicroLevel<
> http://www.gmcmotorhomemarketplace.com/vasilakes/microlevel_intro.pdf>
>
>
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Keith,

Wrote this up last night and I guess I did hit submit.....

When you wrote "certified", I hope you aren't looking for SMD that are certified by DOT for the application. They don't do that. DOT posts some
basic rules about apparent illuminated surface and brightness. As I recall (it should be in the books behind me, but I just got up a 8 on a Saturday
morning and my brain is still in cold start mode), the important things are that the apparent area has to be like 4 square inches and tail lights
should be 4 candle power and brake lights 36. This is all a kind of loosy-goosy rule, that comes around to what LEO thinks that they can enforce.

So, I don't believe that you are going to find SMD LED that the manufacturer certifies because they don't care. DOT won't say anything because
specifications only apply to completed parts.

Is this for the coach or the "Dodge"? What ever, I want to see what you come up with.

Matt - going back to bed
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
Why not just pop in a pair of GE Nighthawk 1157s and be done with it. $2.45 for 2 on my friend’s web site as he is a GE dealer. . No new flasher to
buy and correct color temp and diffusion. Personally I like LEDs in factory applications but think they are tacky in retrofits.
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
One thing I have found is the OEM tungsten bulb has a resistance that the flasher needs to make the bulbs blink properly.

When the LED lights are installed, that resistance is gone and the blink is changed, I think it stops blinking.

The HEAVY DUTY blinkers have a internal resistance for the proper blink and should take care of that problem.

Info courtesy: Burgan Amoco Station, Waukegan il
--
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
UBUNTU VOYAGER - Berzin Auto Center
 
Another downside, if you drive a vehicle in winter, is ice over/ snow over happens more easily with LEDs
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
Matt,
This would be for the GMC. I use certified loosely, spec'd, or recommended would be more precise.

I like the new style taillights, but I think they could be done better. I envision a led panel that covers the whole taillight area and has a good backup light.
Part of me also
So wants to be able display GMC for the stop function. Lol maybe not

I do understand the trouble flashers have with LEDs so I would supply an LED capable flasher
________________________________
From: Matt Colie
Sent: Saturday, December 11, 2021 7:43:15 AM
To: gmclist
Subject: [GMCnet] Re: LED Tail lights

Keith,

Wrote this up last night and I guess I did hit submit.....

When you wrote "certified", I hope you aren't looking for SMD that are certified by DOT for the application. They don't do that. DOT posts some
basic rules about apparent illuminated surface and brightness. As I recall (it should be in the books behind me, but I just got up a 8 on a Saturday
morning and my brain is still in cold start mode), the important things are that the apparent area has to be like 4 square inches and tail lights
should be 4 candle power and brake lights 36. This is all a kind of loosy-goosy rule, that comes around to what LEO thinks that they can enforce.

So, I don't believe that you are going to find SMD LED that the manufacturer certifies because they don't care. DOT won't say anything because
specifications only apply to completed parts.

Is this for the coach or the "Dodge"? What ever, I want to see what you come up with.

Matt - going back to bed
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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