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Headlight Hell

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Original source
10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHHeadlight Hell

Leading reported evidence

Replace wiring

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Replaced all the wiring.

Headlight Hell
Frequently discussed work

Check amps between the two headlight

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Get a multi-meter and check the amps between the two headlight.

Headlight Hell
Read full discussion summary

Leading evidence: 'Replace wiring' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check amps between the two headlight' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check amps between the two headlight

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Get a multi-meter and check the amps between the two headlight.

Headlight Hell

Check tail / license plate / etc lights (who does?)

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

So I don't often check my tail / license plate / etc lights (who does?).

Headlight Hell

Replace bulbs

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

and replace both bulbs.

Headlight Hell

Run light

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

That notch had the effect of cutting out the left side running light.

Headlight Hell
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check amps between the two headlight

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Get a multi-meter and check the amps between the two headlight.

Headlight Hell

Check tail / license plate / etc lights (who does?)

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

So I don't often check my tail / license plate / etc lights (who does?).

Headlight Hell

Replace bulbs

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

and replace both bulbs.

Headlight Hell

Replace wiring

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Replaced all the wiring.

Headlight Hell

Run light

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

That notch had the effect of cutting out the left side running light.

Headlight Hell
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So I don't often check my tail / license plate / etc lights (who does?). But I have been recently. I noticed the running light on the left side was out, so I bought some bulbs. While playing with the headlight switch, that same light came on when the headlights were not on. When the headlights were on, the running light was out. Then I noticed that the headlight switch assembly had a slight extra notch just past the headlights coming on. That notch had the effect of cutting out the left side running light. So I get a new headlight switch assembly (non-OEM) since the bulb is clearly OK and put it in. Now the rear tail lights work but the front left headlight is out. WTF?? Coincidence I suppose but the H7 bulb was actually burned out. So off to the store I go to get a bulb. When I opened the assembly, I noticed the wires were no longer covered by the plastic, so I heat shrink both sides .. and replace both bulbs. Of course I break one of the ear off of this piece while doing it: But I've now got everything in. Problem is now one headlight (left side) seems brighter than the other. AND my rear right fog light doesn't work. I feel like I am chasing my own tail. Is this all just coincidence or am I just being a dope? PS - Does anyone have the part number for that plastic piece above?

POST 2Original post

The insulation has dried out due to heat and cracked. I would check all the affected wires and where they terminate into any molded plugs. The pressed crimps will loosen up over time due to the heat/cool cycles.

POST 3Original post

All the insulation in both headlights on my 99 996 were dried out and cracked. Replaced all the wiring. Daunting process.

POST 4Original post

There is no right rear fog light, only left rear fog light.

POST 5Original post

Get a multi-meter and check the amps between the two headlight. The rear only has one fog light.

POST 6Original post

Doesn’t the “extra” notch activate the TUV required parking light that is turn signal stalk controlled? IE parked engine off, lights off, switch to “notch” stalk to left turn left lights on ...etc.

POST 7 / ORIGINAL POSTEROriginal post

Quotes source post: 16181577

I cut the wires in the middle, put heat shrink on, soldered them back together and shrunk the heat shrink tubing. It was actually very easy when you have all the tools.

POST 8 / ORIGINAL POSTEROriginal post

Quotes source post: 16182480

Somewhere in the recesses of my brain I had heard that the rear fog lights were on one side only. Thanks for reminding me. Saved me buying another headlight control switch!!

POST 9 / ORIGINAL POSTEROriginal post

I was curious what the inside of the old headlight switch looked like. I'm not sure but I think I may have broken it. lol

This is a source reference. Confirm exact model applicability in the original material.