Switched Fog Lights to LED - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old 07-31-2015, 10:30 PM Thread Starter
BenzWorld Elite
 
bigsky's Avatar
 
Date registered: Sep 2013
Vehicle: 1984 280sl 5spd, 02 E320 4matic, 79&79 450sl part-out, 78,79,81,83 300CD, 79 280CE
Location: NW MT
Posts: 1,347
Mentioned: 4 Post(s)
Quoted: 487 Post(s)
Garage
(Thread Starter)
Switched Fog Lights to LED

My original fog lights were in poor shape, was going to run car with no lower fog lights at all. Found, front of car with spoiler just did not look right without fog lights. Never have been happy with the light output of factory fog lights. Ordered a set of 4" x 7" 36W Cree LED spot lights. They had mounting brackets that I could run a 1/4" rod through. This allowed me to drill mounting bracket, and install set screws, for vertical adjustment. Then took factory fog light mounting bracket, and cut off the ends, with mounting holes drilled in them, and welded the ends to my 1/4" rod. This gave me horizontal adjustment, and allowed me to use all factory bolts, and mounting holes in bumper. Really surprised at the amount of light that these LED lights put out.

Pic #1 : LED light compared to factory
Pic #2 : 1/4" rod ran through mounting brackets, factory hardware welded on to rod. Horizontal adj. set screws drilled.
Pic #3 , #4 , #5 : Lights mounted.
Pic #6 : Hi Beam headlights
Pic #7 : Fog lights only
Pic #8 : Hi beam headlights, and fog lights

Like how the hi beam headlights, and the fog lights on together light up the road. Is it possible to wire fog lights into my hi beams directly? Or is an extra 36W to much without wiring a relay into the hi beams?
Attached Thumbnails
Click image for larger version

Name:	DSC00705.jpg
Views:	281
Size:	60.7 KB
ID:	1554665   Click image for larger version

Name:	DSC00707.jpg
Views:	146
Size:	85.5 KB
ID:	1554673   Click image for larger version

Name:	DSC00709.jpg
Views:	137
Size:	50.6 KB
ID:	1554681   Click image for larger version

Name:	DSC00712.jpg
Views:	186
Size:	69.5 KB
ID:	1554689   Click image for larger version

Name:	DSC00713.jpg
Views:	205
Size:	49.6 KB
ID:	1554697  

Click image for larger version

Name:	DSC00720.jpg
Views:	137
Size:	35.5 KB
ID:	1554705   Click image for larger version

Name:	DSC00721.jpg
Views:	142
Size:	30.1 KB
ID:	1554713   Click image for larger version

Name:	DSC00722.jpg
Views:	119
Size:	32.1 KB
ID:	1554721  
cwmoser likes this.

Last edited by bigsky; 07-31-2015 at 10:32 PM.
bigsky is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 08-01-2015, 02:14 AM
BenzWorld Elite
 
Djenka018's Avatar
 
Date registered: Jan 2005
Vehicle: '80 450SLC Afro RHD Ikonengold
Location: ɹǝpu∩ uʍop 'ʎǝupʎS
Posts: 2,663
Mentioned: 1 Post(s)
Quoted: 119 Post(s)
Seldom any replacement-modification tickles my fancy.
I do not like the look of the led's on the 30+yo car but that's only my taste and nothing more. Your mod integrates new function into original design quite well.
I think you may be confusing the function of the spot lights with fog lights.
My fog lights are making a wide horisontal line beam and the idea is to control scatter in order to minimise the reflection from the vapour droplets (unlike high beam). Hardly any usable light... until you indeed drive in the thick fog.

But what I find interesting is the headlights mod you did.
It resembles that done for 126 and 124 and it is my favourite of all DOT afterthoughts

.
Vitamin C for SL... the SLC
Djenka018 is offline  
post #3 of 15 (permalink) Old 08-01-2015, 03:25 AM
BenzWorld Elite
 
cwmoser's Avatar
 
Date registered: May 2004
Vehicle: 1983 380SL, ivory/dk brown, 44k miles, dual roller timing chain. 1986 560SL, red/white, 184K mile.
Location: Advance, NC
Posts: 6,494
Mentioned: 23 Post(s)
Quoted: 1718 Post(s)
I like.

I like creative thinking to make the original better or to fix what is broken.

BTW, have you used LEDs for your interior lighting? LEDs really illuminate the interior.
Walt Williams likes this.

Carl

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



"You have chosen to drive a MERCEDES-BENZ, a car in whose construction and production we have taken great pains because we believe that quality is not a matter of chance." -- page 3, Owners Manual 380SL
Timing Chain, Subframe, wiring harness, Climate Control, Rust prevention, etc.
cwmoser is offline  
Sponsored Links
Advertisement
 
post #4 of 15 (permalink) Old 08-01-2015, 05:24 AM
Moderator
 
rowdie's Avatar
 
Date registered: Jun 2008
Vehicle: 1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Location: OklaMoKan
Posts: 31,105
Mentioned: 48 Post(s)
Quoted: 106 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by Djenka018 View Post
Seldom any replacement-modification tickles my fancy.
I do not like the look of the led's on the 30+yo car but that's only my taste and nothing more. Your mod integrates new function into original design quite well.
I think you may be confusing the function of the spot lights with fog lights.
My fog lights are making a wide horisontal line beam and the idea is to control scatter in order to minimise the reflection from the vapour droplets (unlike high beam). Hardly any usable light... until you indeed drive in the thick fog.

But what I find interesting is the headlights mod you did.
It resembles that done for 126 and 124 and it is my favourite of all DOT afterthoughts
I agree. This defeats the function of the fog lights. Basically it adds extra driving lights.
rowdie is offline  
post #5 of 15 (permalink) Old 08-01-2015, 06:49 AM
BenzWorld Elite
 
reno4u2's Avatar
 
Date registered: Dec 2009
Vehicle: 1988 560SL (California Model)
Location: Las Vegas, NV
Posts: 4,985
Mentioned: 18 Post(s)
Quoted: 827 Post(s)
Quote:
Originally Posted by cwmoser View Post

BTW, have you used LEDs for your interior lighting? LEDs really illuminate the interior.
They sure do!
reno4u2 is offline  
post #6 of 15 (permalink) Old 08-01-2015, 07:43 AM
BenzWorld Elite
 
Fonzi's Avatar
 
Date registered: Jun 2010
Vehicle: 450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro
Location: Philadelphia Area
Posts: 21,438
Mentioned: 49 Post(s)
Quoted: 2316 Post(s)
Garage
I have to confess to using the fogs on my 1985 280sl like high beams in non-foggy weather. The wide light is nice. I think they might be pointed a little high. They do see to work a bit like high beams lighting up the trees as I head down a dark country road. I definitely like having them available, whatever they are for.

Just looking at all the bugs on the front of bigsky's car, you can tell he is doing a good bit of driving at night.

.


My signature:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
If, you want 70's-80's Mercedes tuner wheels, let me know.
Fonzi is offline  
post #7 of 15 (permalink) Old 08-01-2015, 09:15 AM Thread Starter
BenzWorld Elite
 
bigsky's Avatar
 
Date registered: Sep 2013
Vehicle: 1984 280sl 5spd, 02 E320 4matic, 79&79 450sl part-out, 78,79,81,83 300CD, 79 280CE
Location: NW MT
Posts: 1,347
Mentioned: 4 Post(s)
Quoted: 487 Post(s)
Garage
(Thread Starter)
Quote:
Originally Posted by Djenka018 View Post
I think you may be confusing the function of the spot lights with fog lights.
My fog lights are making a wide horisontal line beam and the idea is to control scatter in order to minimise the reflection from the vapour droplets (unlike high beam). Hardly any usable light... until you indeed drive in the thick fog.
The only time we get fog up here is in the winter, when car is in hibernation mode. In the 2 years I have owned car, I tried fog lights once. Was so un-impressed with light output, never used again.



Quote:
Originally Posted by cwmoser View Post

BTW, have you used LEDs for your interior lighting? LEDs really illuminate the interior.
No, not yet, maybe this winter. Not to worried about interior, lots of dust, mud here. Have been really impressed with new LED technology. First LED lights I have ever used were the LED shop lights, installed in shop before painting. They worked so good, thought I would give these a try. They really light up the road. Will now actually use these lights.

Quote:
Originally Posted by Fonzi View Post
I have to confess to using the fogs on my 1985 280sl like high beams in non-foggy weather. The wide light is nice. I think they might be pointed a little high. They do see to work a bit like high beams lighting up the trees as I head down a dark country road. I definitely like having them available, whatever they are for.

Just looking at all the bugs on the front of bigsky's car, you can tell he is doing a good bit of driving at night.
One of the problems with factory fog lights, is that they had no easy vertical adjustment. These lights shoot a beam just a little wider then the hi beams, and just a little bit farther. The light seems more "white" then the hi beams. Really lighting up reflective road signs, and hopefully deer eyes

All bugs are from daytime driving, last night was the first time I used lights all summer Gets up to 95F in daytime but cools to low 50's at night.

My main question is: Can I now wire these LED lights directly to my Hi beam circuit, or will the extra 36 watts be to much for the fuse/dimmer switch/wiring?? I would completely by pass the fog light switch.
bigsky is offline  
post #8 of 15 (permalink) Old 08-01-2015, 06:19 PM
BenzWorld Elite
 
Djenka018's Avatar
 
Date registered: Jan 2005
Vehicle: '80 450SLC Afro RHD Ikonengold
Location: ɹǝpu∩ uʍop 'ʎǝupʎS
Posts: 2,663
Mentioned: 1 Post(s)
Quoted: 119 Post(s)
36W is not much from safety perspective but it will add up on already loaded switches and a further voltage drop on them will reduce the output from the high beam.

You are probably better off running a 40A relay to feed both the globes and LED's. This way a fresh wire from the battery (and a 20A fuse) via the relay will provide minimum voltage drop. I would think AWG14 is minimum thickness of the wire, AWG11 being the optimal.

FYI, on a normal globe at 14.2V (nominal alternator voltage) you get max light output in kLux.
At 11V on the globe the light output is probably more than 30% reduced.

.
Vitamin C for SL... the SLC
Djenka018 is offline  
post #9 of 15 (permalink) Old 08-03-2015, 12:12 AM Thread Starter
BenzWorld Elite
 
bigsky's Avatar
 
Date registered: Sep 2013
Vehicle: 1984 280sl 5spd, 02 E320 4matic, 79&79 450sl part-out, 78,79,81,83 300CD, 79 280CE
Location: NW MT
Posts: 1,347
Mentioned: 4 Post(s)
Quoted: 487 Post(s)
Garage
(Thread Starter)
Just spent last couple of hours aligning and testing new LED lights. Using stock mounting hardware from original fog lights made alignment easy. Really impressed with the amount/quality of light that these LED's put out. wired LED lights up with quick disconnect connectors so that I can easily wire lights to either come on with fog light switch, or hi beam switch. Running on hi beam did not seem to over work any of the connected components. Testing on a 50 mile drive, with LED lights connected to hi beams, none of the on-coming cars seemed bothered by my having the LEDs on. The only problem is that after running hi beam/LEDs, then dimming for on-coming traffic the dims look dingy, compared to the "whiter light the LEDs put out". Will get some whiter lighted H4 bulbs to see if they will work better on dim.
bigsky is offline  
post #10 of 15 (permalink) Old 02-15-2016, 04:43 PM Thread Starter
BenzWorld Elite
 
bigsky's Avatar
 
Date registered: Sep 2013
Vehicle: 1984 280sl 5spd, 02 E320 4matic, 79&79 450sl part-out, 78,79,81,83 300CD, 79 280CE
Location: NW MT
Posts: 1,347
Mentioned: 4 Post(s)
Quoted: 487 Post(s)
Garage
(Thread Starter)
Update, Installed a couple sets of H4 LED hi/lo beam lights before finding a set that works good, and I liked. Using the W123 as a test platform.

I like the way that the LED fog lights lit up the road. Only ran them on hi beam. Whenever I had to dim to low, the light from the halogens seemed "dirty" . The halogen H4 were Sylvania Silver Stars.

The LED H4 lights I used are rated at 4800 lumen, 40W, hi/lo beams, 6000K. This set works good because they do not use a big cooling fan on the back. They also come with a plate that fits into the H4 mounting slots. I glued that plate into the H4 bulb slots, and the LED lamps twist lock into that plate. Simple

Pic 1: LED H4 set I used
Pic 2: Halogen H4 on bright, look really "dingy" compared to LED fog lights
Pic 3: Lights on dim, drivers side LED, Passenger side halogen
Pic 4: Led H4 on hi, with LED fogs

Running the LED H4's on the W123 I have only found one problem. The LED lights do not put out any heat. When I was driving in a snow storm the lights just covered over with snow, and ice. Not a problem for me because I do not plan on driving any of my rear wheel drive MB's in snow, and ice. Just a caution to others.
Attached Thumbnails
Click image for larger version

Name:	DSC01017.jpg
Views:	78
Size:	67.9 KB
ID:	1780762   Click image for larger version

Name:	DSC01016.jpg
Views:	132
Size:	68.2 KB
ID:	1780770   Click image for larger version

Name:	DSC01018.jpg
Views:	136
Size:	25.1 KB
ID:	1780778   Click image for larger version

Name:	DSC01019.jpg
Views:	122
Size:	36.7 KB
ID:	1780786  
bigsky is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Roadster Forums > R/C107 SL/SLC Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome