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

Tail Lights (inoperative)

Thread Tools
 
Search this Thread
 
Old Jul 10, 2005 | 05:37 PM
  #1  
kraabel's Avatar
kraabel
Thread Starter
Racer
 
Joined: May 2005
Posts: 280
Likes: 1
From: Minneapolis, MN
Default Tail Lights (inoperative)

I had been dealing with issues with my right tail light for the past few month. Last night I got pulled over for it. Got a warning, but that's also a warning that I should get it fixed.

This is the problem:

1. Right tail light is out, along with the right-rear marker light.
2. Front driving light works just fine (they're on the same fuse).
3. The tail light worked on and off for a month before it finally went out.
4. I cleaned all the connectors in the socket and replaced all the bulbs.

My question:

1. What's my next step for finding the problem without taking off the bumper?
2. If I take off the bumper, what should I expect for time to get it on and off?

86.5 928.

Last edited by Randy V; Jul 11, 2005 at 12:58 PM.
Reply
Old Jul 10, 2005 | 05:53 PM
  #2  
rixter's Avatar
rixter
928 OB-Wan
Rennlist Member
 
Joined: Apr 2004
Posts: 4,999
Likes: 2
From: Zebulon, NC
Default

turn the lights on
have someone watch the light while you reach up and under and wiggle the connectors.. if it turns on it's likely a loose connection and you may (fingers crossed) be able to get it to stay on

otherwise you very well may have to take off the bumper, I'm in this same situation right now with the 77 and specifically don't drive it night if possible

taking off the bumper is a PITA.. not as bad as door locks but almost
Reply
Old Jul 10, 2005 | 06:08 PM
  #3  
WallyP's Avatar
WallyP

Rennlist Member
Rennlist Site Sponsor

20 Year Member
 
Joined: Jun 2001
Posts: 6,469
Likes: 13
From: Ball Ground, GA
Default

Possibilities include:
- bad ground connection (take the bulb out, check for 12 vdc on the bulb terminal to a good ground. If you havepower, but the bulb doesn't light, it's probably the ground.
- bad connection at the bulb check unit.
Reply
Old Jul 10, 2005 | 09:02 PM
  #4  
Oldtee's Avatar
Oldtee
Pro
 
Joined: May 2005
Posts: 535
Likes: 0
From: Derwood, MD
Default

Make sure it is the correct bulb, try a new one anyway. Make sure it is inserted correctly. Check the power as suggested above. Check the ground with a ohm meter. If open, it will never work even if power is present. Use some emery paper to clean the socket and an eraser to clean the contact. Make sure the contact is sprung forward enough to contact the anode on the bulb. Put a wrench on the ground lug, better, remove it and clean under it.
Reply
Old Jul 10, 2005 | 10:41 PM
  #5  
Airflite40's Avatar
Airflite40
Official Rennlist
Borat Impersonator
Rennlist Member
20 Year Member
 
Joined: Sep 2003
Posts: 5,024
Likes: 39
From: St Augustine, FL
Default

There is a ground point behind the right rear side panel corner, close to where the tool cover is. If you remove the screws from the rear side panel you should be able to pull it back far enough to access it. Yours is probable really dirty, just like mine was. My right tail light would work once in a blue moon until i cleaned this ground post, and presto! works just fine now.
Reply
Old Jul 11, 2005 | 04:48 AM
  #6  
SharkSkin's Avatar
SharkSkin
Rennlist Member
 
Joined: Jan 2004
Posts: 12,620
Likes: 8
From: Boulder Creek, CA
Default

I believe there is a connector in the tire well you might want to check out as well.
Reply
Old Jul 11, 2005 | 12:57 PM
  #7  
Jari.T's Avatar
Jari.T
4th Gear
 
Joined: Sep 2003
Posts: 4
Likes: 0
From: Ii, Finland, Europe
Default

Originally Posted by kraabel
2. If I take off the bumper, what should I expect for time to get it on and off?
Originally Posted by rixter
taking off the bumper is a PITA.. not as bad as door locks but almost
This tool was quite good for the job:


Especially passenger side was difficult:
http://kotinetti.suomi.net/jari.toiv...r/Dsc00457.jpg
http://kotinetti.suomi.net/jari.toiv...r/Dsc00481.jpg
http://kotinetti.suomi.net/jari.toiv...r/Dsc00462.jpg
Reply
Old Jul 25, 2005 | 10:49 AM
  #8  
kraabel's Avatar
kraabel
Thread Starter
Racer
 
Joined: May 2005
Posts: 280
Likes: 1
From: Minneapolis, MN
Default

I took the bumper off over the weekend. Took about 4-5 hours, after a short run to get some tools (flex extender).

When I was scraping out the dirt from under the gas tank fill hose, the light came on for a minute or two, but then hasn't worked again. Is there a ground under there that I can't see?
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

9 Vehicles Porsche Helped Engineer that Aren't Porsches

 Verdad Gallardo
story-1

9 Features and Characteristics That Only Porsche People Understand

 Verdad Gallardo
story-2

I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

 Joe Kucinski
story-3

10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

 Verdad Gallardo
story-4

Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

 Joe Kucinski
story-5

This Builder Is Turning Heads With Its Slantnose 911 Creation

 Verdad Gallardo
story-6

Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

 Verdad Gallardo
story-7

Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

 Verdad Gallardo
story-8

10 Porsche Colors That Have More Personality Than Most People

 Verdad Gallardo
story-9

Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

 Verdad Gallardo
Old Jul 25, 2005 | 11:43 PM
  #9  
John Struthers's Avatar
John Struthers
User
 
Joined: Jul 2001
Posts: 3,291
Likes: 2
From: Midland, Texas
Default

Gotta love those little 8mm(?) nuts and washers.
For all the aggrevation/angst while looking at the Gas tank filler tube and leather flap to include the retaining ring the job wasn't that bad. 1 1/2 - 2 hours. This includes dropping the exhaust.
Unfortuneately, the job was for naught.
No wiring problems and of course the sockets were brite and shiny to begin with.
Brake light warning and loss of brake lights cured itself after months of Multi meter work and wire tracing. Though finding that the (alledged) autobody shop had RIPPED both taillight assemblys out
then reinstalled with 3 inch sheetrock screws which sliced thru the insulation on multiple wires was a part of the problem.
Reply




All times are GMT -3. The time now is 04:58 AM.

story-0
9 Vehicles Porsche Helped Engineer that Aren't Porsches

Slideshow: Long before engineering consulting became trendy, Porsche was quietly helping other automakers build everything from supercars to economy hatchbacks.

By Verdad Gallardo | 2026-05-15 12:44:44


VIEW MORE
story-1
9 Features and Characteristics That Only Porsche People Understand

Slideshow: Some brands build cars. Porsche builds traditions, obsessions, and a few habits that stopped making sense decades ago but somehow became part of the charm.

By Verdad Gallardo | 2026-05-13 18:46:13


VIEW MORE
story-2
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

Slideshow: Six years and 500 Rennlist articles later, these are the biggest changes at Porsche.

By Joe Kucinski | 2026-05-11 09:52:55


VIEW MORE
story-3
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

Slideshow: Some Porsches exist for very specific reasons-others feel like they were built just to see if anyone would notice.

By Verdad Gallardo | 2026-05-06 18:00:32


VIEW MORE
story-4
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

Slideshow: Choosing between the 911 GT3 S/C and 718 Spyder RS in 10 key categories to determine one surprising winner.

By Joe Kucinski | 2026-05-05 12:51:46


VIEW MORE
story-5
This Builder Is Turning Heads With Its Slantnose 911 Creation

Slideshow: A small Polish tuner has reimagined the Porsche 911 Slantnose for the modern era, blending 1980s nostalgia with widebody tuning culture and serious performance upgrades.

By Verdad Gallardo | 2026-05-01 10:49:43


VIEW MORE
story-6
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:37:40


VIEW MORE
story-7
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-8
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-9
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE