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> LED Foglight Project
Spoke
post May 9 2019, 07:12 PM
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Jerry
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I'm working on a 911 variant of the foglight like the 914 that I'm doing now. The 911 will use an LEDdynamics 4015 constant-current 350ma module. For the 911, I can't put any circuitry behind the PCB like the early 914 foglights.

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mepstein
post May 9 2019, 07:23 PM
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Early ones are on their way. They are in much better shape than the first set. CA car vs PA car. They came apart easily. Except the one little grub screw that evaporated into thin air.

Jerry - Thanks for doing this.
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Spoke
post May 9 2019, 07:24 PM
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QUOTE(StratPlayer @ Apr 13 2019, 03:34 PM) *

Will you be making these for the rectangle style fog lights?


If you can forward a single square fixture, I'll design a board for it.

@StratPlayer


If you don't have an extra fixture, maybe @mepstein has an extra square foglight fixture.
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mepstein
post May 9 2019, 07:37 PM
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QUOTE(Spoke @ May 9 2019, 09:24 PM) *

QUOTE(StratPlayer @ Apr 13 2019, 03:34 PM) *

Will you be making these for the rectangle style fog lights?


If you can forward a single square fixture, I'll design a board for it.

@StratPlayer


If you don't have an extra fixture, maybe @mepstein has an extra square foglight fixture.

No, I had a set from a ‘75 parts car and couldn’t give them away so eventually threw them away. Ask chi-town. He’s backdating a later car. Might have fogs.
I still think there is potential in the hood lights. They are on many marques and rally cars.
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Chi-town
post May 9 2019, 08:48 PM
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Sorry no fogs on my 75'
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DRPHIL914
post May 10 2019, 08:13 AM
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QUOTE(Spoke @ May 9 2019, 09:24 PM) *

QUOTE(StratPlayer @ Apr 13 2019, 03:34 PM) *

Will you be making these for the rectangle style fog lights?


If you can forward a single square fixture, I'll design a board for it.

@StratPlayer


If you don't have an extra fixture, maybe @mepstein has an extra square foglight fixture.


I have a rectangular fixture that is missing the glass lens I can send you .
PM me with an address and I can sent it out tomorrow- i backdated my bumpers so I will be getting the early round LED that you are working on now, but my 75 wiring harness has the female connector for a spade from the light for + , the ground was supplied not by wire but thru the light body which grounded to the frame thru the mounting to bumper and bumper to car chassis .
Anyway let me know if you want this light to use for your mock up
Phil
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Chi-town
post May 10 2019, 08:32 AM
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Are you going to try different optics or main lenses to see if you can get the pattern back under control? If not these things will be dangerous to other drivers on the road.
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mepstein
post May 10 2019, 08:42 AM
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QUOTE(Chi-town @ May 10 2019, 10:32 AM) *

Are you going to try different optics or main lenses to see if you can get the pattern back under control? If not these things will be dangerous to other drivers on the road.

Do regular fogs have a cutoff?
I know if I left the fogs lit on my Durango, cars flashed me.
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Luke M
post May 10 2019, 10:31 AM
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QUOTE(mepstein @ May 10 2019, 07:42 AM) *

QUOTE(Chi-town @ May 10 2019, 10:32 AM) *

Are you going to try different optics or main lenses to see if you can get the pattern back under control? If not these things will be dangerous to other drivers on the road.

Do regular fogs have a cutoff?
I know if I left the fogs lit on my Durango, cars flashed me.



The way most newer cars are wired from the factory you can't turn on the fog lights w/o having the headlights on. Once the headlights are on the fog lights will turn on but once you turn on the high beams the fog lights turn off. After the high beams are turned off and back to low beam the fogs turn back on. You can wire the fog lights so they can turn on w/o the headlights on. I plan on doing just that on my 6. I may even use my fog lights as daytime driving lights along with my euro led front turn signal lights.

http://www.914world.com/bbs2/index.php?showtopic=330111

Once the fog lights/headlights are adjusted there shouldn't be a problem with blinding oncoming traffic. Yes, you will get the people that still flash their lights at you if they think it's too bright. There's not much you can do about that. I drive a pickup truck as my dd and even with the headlights on low I get the oncoming traffic flashing their lights at me. My dd has factory headlights on it but it's the height of the vehicle that puts the headlights right inline of sight. The height causes it to seam brighter then what they are. Then you get the newer vehicles with their led/high res lights that seam way too bright as well. All are within DOT standards but still other drivers may feel they are too bright and flash. I get this a lot when I drive my truck. I even showed an elderly gentleman that complained that my high beams where on in a parking lot. When I showed him it was on low beam vs high beam he apologized and went on his way. Like stated once adjusted properly there shouldn't be an issue.

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Chi-town
post May 10 2019, 12:09 PM
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There's a big difference between an old 35 watt halogen bulb behind secondary reflector and multiple LED output straight out the lens.

If you look at the output shot he posted the light is everywhere there's not even a focused beam to aim.

LEDs are meant to be in a projector housing with a defined cutoff to be legal and safe for oncoming traffic.

I spent a year dealing with LED lights and SAE/DOT regulations and there are some pretty specific limitations to keep you from blinding others.

With out improved optics and light control these are just a bad idea


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Spoke
post May 10 2019, 02:54 PM
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QUOTE(Chi-town @ May 10 2019, 10:32 AM) *

Are you going to try different optics or main lenses to see if you can get the pattern back under control? If not these things will be dangerous to other drivers on the road.


I think I'll be able to cut down on the upper washout by applying a shade over the top of each LED lens. Will be doing some experimentation to see what is the best shading to achieve a sharper upper cut off.
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Spoke
post Jun 1 2019, 06:52 AM
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Put the board into one of the fixtures provided by @mepstein . The LED lenses and holders fit under the early glass without any spacers as with the later glass. So the original clips can be used.

Mark, I'm planning to paint the fixtures since these will be ready to be installed when I return them.


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Spoke
post Jun 1 2019, 06:53 AM
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The early lenses are at least 5mm deeper than the later lenses.


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mepstein
post Jun 1 2019, 07:02 AM
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QUOTE(Spoke @ Jun 1 2019, 08:52 AM) *

Put the board into one of the fixtures provided by @mepstein . The LED lenses and holders fit under the early glass without any spacers as with the later glass. So the original clips can be used.

Mark, I'm planning to paint the fixtures since these will be ready to be installed when I return them.

(IMG:style_emoticons/default/beerchug.gif)
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Spoke
post Jun 1 2019, 07:04 AM
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Does anyone make the rubber gasket that goes around the lens? Or is this part of the lens? @Mikey914


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Chi-town
post Jun 1 2019, 08:13 AM
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914 Rubber makes them
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Spoke
post Jun 1 2019, 09:13 AM
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QUOTE(Chi-town @ Jun 1 2019, 10:13 AM) *

914 Rubber makes them


Thanks. I ordered 2 sets. Didn't find them at first. They were on the gasket page and not on the lens page.
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Mikey914
post Jun 1 2019, 09:54 PM
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Ill make sure they get cross listed. We also ma in e protective lens covers and the spring clips that hold these into the outer rings.
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Spoke
post Jun 11 2019, 07:44 PM
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Finally got the 2nd 914 foglight assembled. This discrete converter kicks ass but is a pain in the ass to assemble.

The board on the left is a 911 foglight. I'm hoping to get those installed on my 930 this weekend. The 911 foglight uses a boost module and is much easier to assemble. The only difference at this point is the module is 350ma whereas the discrete converter is 500ma. I'm hoping the 911 foglight will still be significantly brighter than the OEM bulb even with the lower 350ma current.

If the 911 foglight is bright enough, I may go with the module for the 914 foglights. I have 4 of these first 914 boards that I will build up. I'll put a pair on my 914 and give the other pair to mepstein.


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Spoke
post Jun 11 2019, 07:47 PM
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Here's the 911 foglight fitted in the lens. The fit is perfect and plastic spacers keep the board in place. Since the reflector is part of the fixture, there can be no components on the backside of the board like the 914 foglight.



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