 LED Taillights, Custom Made for the 914 |
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| Spoke |
 Jan 26 2013, 02:40 AM
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#201
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Jerry  Group: Members Posts: 7,081 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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I've wanted to convert my 914 taillights to LED for a while but never got around to it.
Finally I started working on the design of the taillights. This will be a single custom PCB for each side and will have all the LEDs and control circuits on it. One PCB will be used for both sides. The plan is to remove the existing plastic reflector and bulb assembly and mount a custom board in its place. With proper standoffs, I should be able to mount the board using the same 2 screw holes that secure the reflector. I'm trying to decide now how many LEDs to use for each purpose. Right now, I have 8 LEDs for the backup lights, 20 LEDs for the running/Brake lights, 24 LEDs for the turnsignals, and 4 LEDs for the side marker. I've been observing modern cars with LED taillights and some use a few LEDs (like 8) and some a lot (+20). I would like your opinions on how many LEDs you think would be good to use. On the board below, the LEDs are spaced about 0.7 inches apart. These will be medium brightness white LEDs. (I'll let the lenses provide the color). The first cut at the board is shown below for the driver's side. The side marker LEDs will be right angle LEDs pointing out the side of the board. They can be seen on the extreme left side of the board. If these work out, I could manufacture them for World members. One thing though, they won't be cheap. The LEDs are about $0.50 through Digikey and there are more than 55 LEDs on each right now. Plus there's 2 dc-dc converters for providing constant current for the tail/brake and turnsignal LEDs. Cheers (IMG:style_emoticons/default/beerchug.gif) Attached thumbnail(s) 
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| charliew |
Feb 1 2013, 09:33 PM
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#202
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Many years ago I modified a 69 mustang rear tail light lens and found out it needed so much reflector lens to pass tx inspection. I bet if you make a light setup and it's brighter than the original lights it will be good. I would not worry about it on my car but you how lawyers are. Off road only is also ok for me.
I tried those led replacement bulbs in a 86 blazer and they were brighter but didn't last very long for some reason. |
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Posts in this topic
Spoke LED Taillights Jan 26 2013, 02:40 AM
euro911 Nice. Are you going to follow up with front light ... Jan 26 2013, 03:15 AM rfuerst911sc I like this please keep the forum updated with pro... Jan 26 2013, 04:58 AM Bartlett 914 Good Idea. I like to see lots of leds. I don't... Jan 26 2013, 08:09 AM Cairo94507 I would definitely be in on this buy. I like your... Jan 26 2013, 08:22 AM scotty b Do a search. Someone was putting quite a bit of ef... Jan 26 2013, 08:47 AM Mikey914 I'd do the math with the brightest LEDs availa... Jan 26 2013, 08:57 AM wndsnd Or,
You could just do this.....
Little ... Jan 26 2013, 09:23 AM GeorgeRud I've been looking at these bulbs myself, and h... Jan 26 2013, 09:27 AM wndsnd My car isn't ready yet, so,
Maybe I can get a... Jan 26 2013, 09:33 AM
Scarlet75
My car isn't ready yet, so,
Maybe I can get ... Jan 28 2013, 05:07 AM scotty b Found it
http://www.914world.com/bbs2/index.php?s... Jan 26 2013, 10:08 AM Tilly74 If you're upgrading to LED's (or not, they... Jan 26 2013, 10:16 AM scotty b
If you're upgrading to LED's (or not, the... Jan 26 2013, 10:21 AM Tilly74
[quote name='Tilly74' post='1809688' date='Jan 26... Jan 26 2013, 10:33 AM Nürburg Nomad
If you're upgrading to LED's (or not, the... Jan 28 2013, 02:09 PM Spoke Thanks for the replies. I'll try to address ea... Jan 26 2013, 10:38 AM PThompson509 Very nice. BTW, if you are keeping the original p... Jan 26 2013, 12:59 PM Spoke I thought about using colored LEDs for turn and br... Jan 27 2013, 02:28 PM Spoke Here's a close up of the outside end of the bo... Jan 27 2013, 02:45 PM A&PGirl Very nice.
What kind of software are you working... Jan 27 2013, 03:16 PM Spoke
Very nice.
What kind of software are you workin... Jan 27 2013, 04:40 PM Cairo94507 I definitely want these :beer1: :beer1: :beer1: Jan 27 2013, 03:38 PM gothspeed I am in for LEDs, will they replace the entire ass... Jan 27 2013, 03:53 PM Spoke
I am in for LEDs, will they replace the entire as... Jan 27 2013, 04:50 PM gothspeed
I am in for LEDs, will they replace the entire a... Jan 29 2013, 12:08 PM JmuRiz Cool stuff, there is a company that does something... Jan 27 2013, 05:15 PM d914 interested Jan 27 2013, 05:19 PM Chris H. Very interested.. Jan 27 2013, 05:38 PM no1uno interested Jan 27 2013, 05:53 PM A&PGirl
Very nice.
What kind of software are you worki... Jan 27 2013, 06:25 PM monkeyboy Lots of those drop in LED "bulbs" are ve... Jan 27 2013, 11:15 PM DEC
Lots of those drop in LED "bulbs" are v... Jan 28 2013, 01:45 AM ruby914 Interested! Jan 28 2013, 01:51 AM lagunero Paul (smrz914) made them. I don't know how man... Jan 28 2013, 11:53 AM Spoke
Paul (smrz914) made them. I don't know how ma... Jan 28 2013, 04:58 PM zymurgist Fascinating. I would be in for a set if this come... Jan 28 2013, 01:18 PM Jgilliam914 If you build them we will buy!!
Every tim... Jan 28 2013, 04:11 PM tscrihfield Spoke let me know if you need any help on this. I... Jan 28 2013, 05:15 PM Spoke
Spoke let me know if you need any help on this. ... Jan 28 2013, 09:35 PM charliew I am also interested in these lights. I have a rad... Jan 28 2013, 11:14 PM Harpo Very interested. Count me in
David Jan 29 2013, 05:42 AM Spoke Here's the test fixture that I've used to ... Jan 29 2013, 11:52 AM Spoke Here's the comparison with the existing brake ... Jan 29 2013, 11:54 AM Spoke The standard backup light is 25W which is slightly... Jan 29 2013, 11:58 AM HarveyH You might consider doing your testing with red LED... Jan 29 2013, 12:17 PM 7TPorsh
You might consider doing your testing with red LE... Jan 29 2013, 12:25 PM zymurgist
Does that mean two different specs, one for US... Jan 29 2013, 12:44 PM HarveyH 7TPorsh:
I would think that most standard incand... Jan 29 2013, 02:09 PM zymurgist
From what I think you're asking: optimally y... Jan 29 2013, 05:49 PM Madswede
7TPorsh:
I would think that most standard incand... Jan 29 2013, 03:28 PM cconcepcion I'm interested in a set.... Jan 29 2013, 06:25 PM Type 47 interested Jan 29 2013, 06:34 PM Cairo94507 This project is definitely heading in the right di... Jan 29 2013, 06:50 PM Chris H.
This project is definitely heading in the right d... Jan 30 2013, 04:40 PM mrbubblehead :agree: Jan 29 2013, 06:52 PM PThompson509 :agree: +1
I've got a LED strip just under th... Jan 29 2013, 10:26 PM StratPlayer Interested :driving: Jan 30 2013, 04:10 PM montoya 73 2.0 Would be interested if the LED's are of the co... Jan 30 2013, 04:18 PM steuspeed For a long time blue LEDs did not exist, so it is ... Jan 30 2013, 04:28 PM a914622 So Volvo uses a diffuser that looks like a half a ... Jan 30 2013, 05:21 PM Spoke I'm looking for more powerful LEDs for my next... Jan 30 2013, 10:22 PM montoya 73 2.0 Have you looked at LumiLEDs?
Philips LumiLEDS
Oz... Jan 30 2013, 11:59 PM a914622 The super flux ones look just like the volvo 3rd b... Jan 31 2013, 07:33 PM montoya 73 2.0 My mom worked at LumiLEDS several years ago. She g... Jan 31 2013, 08:00 PM Spoke I checked out the LumiLEDs. They look pretty good.... Feb 1 2013, 11:22 AM zymurgist Thanks for putting this together, Spoke. I bet yo... Feb 1 2013, 02:14 PM Spoke The test I did with 10 LEDs putting out about 40LM... Feb 1 2013, 09:15 PM Spoke For those thinking about changing to LED bulb repl... Feb 1 2013, 10:22 PM Cairo94507 I would be perfectly happy for my tail light kit t... Feb 1 2013, 10:50 PM euro911 When I was involved with a colleague manufacturing... Feb 1 2013, 11:04 PM Harpo Yea, I'm OK with "for off road use only... Feb 2 2013, 08:21 AM monkeyboy Obviously I would only be using these on my track ... Feb 4 2013, 10:55 AM Chris H. OK stupid question... how about finding a newer ca... Feb 5 2013, 11:05 AM Spoke
OK stupid question... how about finding a newer c... Feb 6 2013, 11:57 AM Chris H.
OK stupid question... how about finding a newer ... Feb 6 2013, 02:12 PM Bartlett 914 I like this project and I hope you are able to fol... Feb 5 2013, 05:04 PM gothspeed Awesome!!! I hope this project comes t... Feb 6 2013, 12:30 PM Spoke The more I see LEDs on vehicles the more I'm c... Feb 8 2013, 10:32 AM kg6dxn
The more I see LEDs on vehicles the more I'm ... Feb 8 2013, 06:56 PM Spoke I started testing the next batch of LED samples lo... Feb 9 2013, 10:04 PM montoya 73 2.0 :thumbsup: so far!!! Feb 9 2013, 10:35 PM euro911 What will the total current draw be for a complete... Feb 9 2013, 11:09 PM Spoke
What will the total current draw be for a complet... Feb 11 2013, 12:16 PM mrbubblehead Oh hell ya spoke. I think those are the best so fa... Feb 10 2013, 12:41 AM Cairo94507 Making nice progress. I really like the way this ... Feb 10 2013, 07:25 AM banger After looking at your board, you might want to mov... Feb 10 2013, 11:56 AM Spoke
After looking at your board, you might want to mo... Feb 11 2013, 12:18 PM a914622 ok so i got around to getting some pics of the vol... Feb 10 2013, 02:47 PM Spoke
ok so i got around to getting some pics of the vo... Feb 10 2013, 05:42 PM mrholland2 I'd be interested in a Euro tail light spec se... Feb 10 2013, 09:08 PM Spoke I'm looking for an economical supply for lense... Feb 13 2013, 11:31 PM racerbvd
I'm looking for an economical supply for lens... Feb 20 2013, 10:59 PM Cairo94507 I never expected these to be inexpensive. I am in... Feb 14 2013, 07:03 AM Chris H. :agree: I'm in for a set as well regardless. ... Feb 14 2013, 09:18 AM Spoke I've ordered some sample reflectors from Futur... Feb 20 2013, 09:38 PM Cairo94507 Great and thanks for the update. Feb 20 2013, 09:54 PM Spoke Got the lens samples in this week. 2 of the sample... Feb 27 2013, 11:59 AM Spoke Next up are the Carclo lens with 18 degree beam an... Feb 27 2013, 12:07 PM |
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