Where to get Custom LED Bulbs?

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
I've been trying to find a company or just generally somebody that does custom order LED Bulbs. Like 921 or 3157 socket LEDs.

Haven't had any luck yet. Anyone know somebody or even recommend?
Price isn't really the issue if it's quality stuff and reliable.
 

86GT351

Senior Member
Super Moderator
Joined
Nov 14, 2010
Posts
7,276
Reaction score
1,766
Location
Sunny South Florida
I've been trying to find a company or just generally somebody that does custom order LED Bulbs. Like 921 or 3157 socket LEDs.

Haven't had any luck yet. Anyone know somebody or even recommend?
Price isn't really the issue if it's quality stuff and reliable.
Diode Dynamics makes the 921. They alos make the 3157. www.diodedynamics.com
 

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
Diode Dynamics makes the 921. They alos make the 3157. www.diodedynamics.com
Reached out to them. Quote: "Unfortunately, we do not really offer any custom 3157 bulbs at this time." So that's another no

It's insane how I cannot find ANYBODY for something custom when LEDs are literally sold everywhere.... and then the ones I find only work with companys or some other BS
 

07 Boss

Senior Member
Joined
Jan 25, 2009
Posts
4,281
Reaction score
1,393
Location
Sin City
What exactly are you looking for that makes them "custom?" I mean what are you looking to do with these lights?
 

86GT351

Senior Member
Super Moderator
Joined
Nov 14, 2010
Posts
7,276
Reaction score
1,766
Location
Sunny South Florida
Reached out to them. Quote: "Unfortunately, we do not really offer any custom 3157 bulbs at this time." So that's another no

It's insane how I cannot find ANYBODY for something custom when LEDs are literally sold everywhere.... and then the ones I find only work with companys or some other BS
I would reach back out to them and speak with someone else. They are clearly listed on there site

 

slonison

Member
Joined
Oct 29, 2024
Posts
97
Reaction score
138
Location
Clifton, nj
I've been trying to find a company or just generally somebody that does custom order LED Bulbs. Like 921 or 3157 socket LEDs.

Haven't had any luck yet. Anyone know somebody or even recommend?
Price isn't really the issue if it's quality stuff and reliable.

I have found success getting custom stuff on alibaba. I find a manufacturer and just reach out. I go through 12-13 til I find the right one.
 

07 Boss

Senior Member
Joined
Jan 25, 2009
Posts
4,281
Reaction score
1,393
Location
Sin City
What kind of custom option are you looking for??? Still not clear on what is a custom 921 or 3157 led. A bulb is a bulb, no? Is it a particular color or brightness? I'm just not understanding.

Not sure how you expect help if we don't know what you are looking for.
 
Last edited:

86GT351

Senior Member
Super Moderator
Joined
Nov 14, 2010
Posts
7,276
Reaction score
1,766
Location
Sunny South Florida
What kind of custom option are you looking for??? Still not clear on what is a custom 921 or 3157 led. A bulb is a bulb, no? Is it a particular color or brightness? I'm just not understanding.

Not sure how you expect help if we don't know what you are looking for.
Look at the link I posted from Diode Dynamics
 

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
What exactly are you looking for that makes them "custom?" I mean what are you looking to do with these lights?
Colors, Brightness, switching curcuit etc. If you want I can post the specifics here but it's a long list. Nothing impossible, all already done on its own but never combined like I need it because no one else is stupid enough to do what I do.

I'm trying to get amber Sequential Turn Signals to work because I need them here and since the brake lights need to also be working at the same all while not wanting to change the tai light housing makes the off the shelf stuff not work.... I have some that are almost perfect but where I bought it from says they can't change the one thing that doesn't make them work for me.
 

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
I would reach back out to them and speak with someone else. They are clearly listed on there site

Yea but the way I understand it is they don't do changes on what they're selling.
 

slonison

Member
Joined
Oct 29, 2024
Posts
97
Reaction score
138
Location
Clifton, nj
Colors, Brightness, switching curcuit etc. If you want I can post the specifics here but it's a long list. Nothing impossible, all already done on its own but never combined like I need it because no one else is stupid enough to do what I do.

I'm trying to get amber Sequential Turn Signals to work because I need them here and since the brake lights need to also be working at the same all while not wanting to change the tai light housing makes the off the shelf stuff not work.... I have some that are almost perfect but where I bought it from says they can't change the one thing that doesn't make them work for me.

Perhaps we can provide support or alternatives to you based on what you're trying to do.
I have designed small circuits for the MyColor system and built my own common anode to common cathode converters.

What specifically are you trying to do with the bulb vs the housing.

Sounds like whatever your solution is that you're looking for needs to be contained within the bulb itself.
 

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
Perhaps we can provide support or alternatives to you based on what you're trying to do.
I have designed small circuits for the MyColor system and built my own common anode to common cathode converters.

What specifically are you trying to do with the bulb vs the housing.

Sounds like whatever your solution is that you're looking for needs to be contained within the bulb itself.
Idk if you followed my posts. Basically for the Conversion I built my own wiring which just plugs into the OEM car harness and uses the original Housings and a Raxiom Sequential Harness.

With normal lights on all three light up red but dimmed like the normal 7W haogen light, with turn signal on I have a Yellow Sequence going from the inner to the outer and for brake lights the middle and outer lightup overriding two of the three turn signal lights because both turn and brake need to work at the same time. Now the problem I'm having is the LEDs currently installed fitting for th original 3157 socket have a delay from Yellow to red so they don't light up red inbetween the turn signal lights pulses, wich is not good for brake lights. otherwise they are PERFECT. so the outer and middle chambers are currently disconnected and only the inner most chamber flashes yellow until I can find other LEDs like the ones I already have that don't have that delay.
Probblem is no one makes exactly what I need. Either brightness is to low for brakes or it has that delay or the are white and amber which makes the red lights color kinda weird for me. just always one thing.

The end goal is still a plug and play no wires cut solution thats clean, reliable, looks good and doesn't even throw any DTCs (last one I'm still fighting a single code)


Plus later on I'll try to somehow get a halogen look light to come out of the front amber parking light housing so I can put them back on and have my front side markers back
 

07 Boss

Senior Member
Joined
Jan 25, 2009
Posts
4,281
Reaction score
1,393
Location
Sin City
Definitely makes more sense now. I'm not sure I've ever seen an led light with those kind of features built in. I will look around though. But maybe we should start thinking of an alternative like custom wiring. I know that you don't want to do that but you might not have a choice.
 

slonison

Member
Joined
Oct 29, 2024
Posts
97
Reaction score
138
Location
Clifton, nj
Wouldn
Idk if you followed my posts. Basically for the Conversion I built my own wiring which just plugs into the OEM car harness and uses the original Housings and a Raxiom Sequential Harness.

With normal lights on all three light up red but dimmed like the normal 7W haogen light, with turn signal on I have a Yellow Sequence going from the inner to the outer and for brake lights the middle and outer lightup overriding two of the three turn signal lights because both turn and brake need to work at the same time. Now the problem I'm having is the LEDs currently installed fitting for th original 3157 socket have a delay from Yellow to red so they don't light up red inbetween the turn signal lights pulses, wich is not good for brake lights. otherwise they are PERFECT. so the outer and middle chambers are currently disconnected and only the inner most chamber flashes yellow until I can find other LEDs like the ones I already have that don't have that delay.
Probblem is no one makes exactly what I need. Either brightness is to low for brakes or it has that delay or the are white and amber which makes the red lights color kinda weird for me. just always one thing.

The end goal is still a plug and play no wires cut solution thats clean, reliable, looks good and doesn't even throw any DTCs (last one I'm still fighting a single code)


Plus later on I'll try to somehow get a halogen look light to come out of the front amber parking light housing so I can put them back on and have my front side markers back

I can fully appreciate the no splicing piece. I'm the same way and have made a giant connector sheet with links to the OEM and mouser/digikey links for about half the connectors in the car


What I'm confused about, and maybe it's because I have a late model s197 2013. Do the tail lights have amber lights? I thought the tail lights were completely red excepting the reverse light which is white?

Either way, the timing, from my understanding is controlled by the raxiom harness, not necessarily the bulbs...

I could be wrong though.
 

DE_Marcus

Member
Joined
Mar 25, 2025
Posts
119
Reaction score
52
Location
South Bavaria, Germany
Wouldn


I can fully appreciate the no splicing piece. I'm the same way and have made a giant connector sheet with links to the OEM and mouser/digikey links for about half the connectors in the car


What I'm confused about, and maybe it's because I have a late model s197 2013. Do the tail lights have amber lights? I thought the tail lights were completely red excepting the reverse light which is white?

Either way, the timing, from my understanding is controlled by the raxiom harness, not necessarily the bulbs...

I could be wrong though.
Yes it's fully red with white for the reverse. But there's LEDs that shine yellow even throught the red housings. There should be a vid on my other post of the turn signals in action.

The Raxiom Harness only allows for the sequencing. On a stock car the brake and turn signals would sequence since its on the same pins.
I reused it to make my own.
Weirdly enough they told me it wouldn't work with LEDs but it does......
 

07 Boss

Senior Member
Joined
Jan 25, 2009
Posts
4,281
Reaction score
1,393
Location
Sin City
What I'm confused about, and maybe it's because I have a late model s197 2013. Do the tail lights have amber lights? I thought the tail lights were completely red excepting the reverse light which is white?
In Europe you need amber signals.
 

Support us!

Support Us - Become A Supporting Member Today!

Click Here For Details

Back
Top