Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

No dim headlight

Thread Tools
 
Search this Thread
 
Old 12-21-2013, 12:57 PM
  #1  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default No dim headlight

Drivers side headlight works on bright but not on dim. No problem just put in new bulb, right? Well no luck still does not work. What is the next step? 87S4
Help please
David
Old 12-21-2013, 01:04 PM
  #2  
extanker
Banned
 
extanker's Avatar
 
Join Date: Sep 2009
Posts: 2,161
Likes: 0
Received 5 Likes on 5 Posts
Default

a test light and back probing
Old 12-21-2013, 01:27 PM
  #3  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default

Thanks extanker, I`ll give it a try
Old 12-21-2013, 03:22 PM
  #4  
Alan
Electron Wrangler
Lifetime Rennlist
Member
 
Alan's Avatar
 
Join Date: Mar 2002
Location: Phoenix AZ
Posts: 13,371
Received 398 Likes on 272 Posts
Default

Check the fuse first...

Alan
Old 12-21-2013, 04:31 PM
  #5  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default

Thanks Alan
fuse is okay
Old 12-21-2013, 04:55 PM
  #6  
Alan
Electron Wrangler
Lifetime Rennlist
Member
 
Alan's Avatar
 
Join Date: Mar 2002
Location: Phoenix AZ
Posts: 13,371
Received 398 Likes on 272 Posts
Default

Check the fuse again with a voltmeter this time - when the low beams are on do you get 12+v on the dimple in the fuse end at the bottom (you can probe the metal blade while the fuse is in).

If you have 12+v here then the HL relay is good and its a wiring issue.

Alan
Old 12-21-2013, 10:35 PM
  #7  
The Forgotten On
Rennlist Member
 
The Forgotten On's Avatar
 
Join Date: May 2012
Location: Thousand Oaks California
Posts: 4,931
Received 298 Likes on 246 Posts
Default

Your relay could be bad or your backing to your headlight could have corroded. That happened to me with a H4 headlight.

I'm sure the H5's must have a similar backing. Also check to see if one of your wires broke inside of the fender where the wiring has to bend for the popups.
Old 12-22-2013, 12:06 AM
  #8  
Lizard928
Nordschleife Master
 
Lizard928's Avatar
 
Join Date: Apr 2003
Location: Abbotsford B.C.
Posts: 9,600
Received 34 Likes on 25 Posts
Default

I'd put money on the fuse too.
Old 12-22-2013, 07:42 AM
  #9  
Dutch 928 fan
Racer
 
Dutch 928 fan's Avatar
 
Join Date: Dec 2009
Location: The Netherlands, Zuid Beijerland
Posts: 278
Received 0 Likes on 0 Posts
Default

Test the big relay by hand. Take the cap of, turn on the lights and see if the relay switch works. If not, push it by hand and see if lights come on.
If toast, lay down 100+ bucks and be happy. :-)
Old 12-22-2013, 11:00 AM
  #10  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default

I`ll check the fuse and relay today. One question, if it is one of these would only one light not work?
David
Old 12-22-2013, 11:57 AM
  #11  
Alan
Electron Wrangler
Lifetime Rennlist
Member
 
Alan's Avatar
 
Join Date: Mar 2002
Location: Phoenix AZ
Posts: 13,371
Received 398 Likes on 272 Posts
Default

If one light works it cannot be the relay - there is only one.

However there are 4 fuses - one for each of: left low beam, right low beam, left high beam, right high beam.

Alan
Old 12-22-2013, 12:42 PM
  #12  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default

Thanks guys, it was the dipped beam fuse. I did not know there were 4 fuses are what a dipped beam was. It amazes me how ignorant I am after all the work I have done on these cars.
Tanks again
David
Old 12-22-2013, 01:01 PM
  #13  
Wisconsin Joe
Nordschleife Master
 
Wisconsin Joe's Avatar
 
Join Date: Jan 2013
Location: Kaukauna Wisconsin
Posts: 5,925
Received 302 Likes on 231 Posts
Default

Originally Posted by David Wilson
Thanks guys, it was the dipped beam fuse. I did not know there were 4 fuses are what a dipped beam was. It amazes me how ignorant I am after all the work I have done on these cars.
Tanks again
David
The more I learn about my car, the more I realize how much I don't know. That's true about more in life than just this car, but it really applies here.

The thing that really amazes me is the depth and breadth of knowledge that some of these folks have. And their willingness to share it as freely as they do.
Old 12-23-2013, 12:00 AM
  #14  
David Wilson
Instructor
Thread Starter
 
David Wilson's Avatar
 
Join Date: May 2003
Location: Ocean Springs,Ms.
Posts: 237
Received 4 Likes on 1 Post
Default

Very true W. Joe



Quick Reply: No dim headlight



All times are GMT -3. The time now is 06:23 AM.