Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-31-2003, 12:55 PM
BoostnBenz's Avatar
Benötigt Mehr Druck!
 
Join Date: Aug 2002
Posts: 1,855
W123 Euro Headlight Grounding Problems

Hi all,
My 84 had some upgraded 7" lights before with slightly oversized bulbs (50/85?) but I decided to go for a newer look and installed my euro headlights. I did all the wiring inside the headlight so I can easily convert back to the US spec lights if desired. I used the same bulbs as the lights that came out, but now I'm having a problem with it grounding. This doesn't make any sense, when my low beams are on they are dim, turn the fog lights on and the fog lights go to candlepower. I would just ground the units but the polarity changes when the high beams kick on. I've used jumpers and a ohmeter to insure I don't have a cold solder anywhere but even with one headlight the ground isn't suffiecient just for the low beam where as before it worked perfectly. Any ideas?

Thanks in advance,
Jeff M.
__________________
Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k
Reply With Quote
  #2  
Old 05-31-2003, 02:46 PM
MTI's Avatar
MTI MTI is offline
Registered User
 
Join Date: Nov 2002
Location: Scottsdale, Arizona
Posts: 10,626
Did you rewire the internal wiring of the eurospec headlights so that you maintained the four prong US plug?
Reply With Quote
  #3  
Old 05-31-2003, 03:44 PM
BoostnBenz's Avatar
Benötigt Mehr Druck!
 
Join Date: Aug 2002
Posts: 1,855
Yea, actually I just realized it would of been quite a bit simpler to just get the 6 pin plug and swap the order, I forgot how simple mercedes makes their harnesses. But yea, it is still using the same four prong plug.
__________________
Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k
Reply With Quote
  #4  
Old 05-31-2003, 04:46 PM
BoostnBenz's Avatar
Benötigt Mehr Druck!
 
Join Date: Aug 2002
Posts: 1,855
So after giving it some good thought I realized the only thing that could possibly be happening is if the ground is going through wrong by adding resistance. It turns out I had the high beam and ground wires swapped on the H4 harness, everything but the grounding appeared perfectly normal. Thanks for starting to help MTI. So happy to have that done, looks great.
__________________
Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k
Reply With Quote
  #5  
Old 05-31-2003, 05:04 PM
MTI's Avatar
MTI MTI is offline
Registered User
 
Join Date: Nov 2002
Location: Scottsdale, Arizona
Posts: 10,626
Good thinking. Without seeing a wiring schematic on how you rewired the internals, it would have been hard to help you diagnose. It sounded like the situation where people just plug their old US connector onto the euro headlight pins, which will result in a very dim main beam.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 04:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page