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kerb scraper
Spa-Francorchamps


Joined: 25 May 2012
Posts: 346
Location: Hertfordshire

1997 Porsche 993 Carrera 4

PostPosted: Tue Jul 18, 2017 7:00 pm    Post subject: Reply with quote

The contacts of the bulb are flimsy and flexible so make sure they are properly aligned.

Similarly the contacts in the socket are small and prone to surface corrosion so get in there with a torch, magnifying glass, cotton wool buds dipped in electrical contact cleaner or even a thin strip of fine abrasive paper (no coarser than 1000 grit) folded to give it a bit of purchase. If you can find a multimeter with fine probes check for 12volts across the socket.

Clearly no man's life feels complete without an illuminated dash light switch so keep trying.
_________________
1997 C4 Cabriolet, Arctic Silver, black interior, 18" hollow spokes, Bilstein PSS10s, RSRs, 200 cell cats, Mobil 1 sticker, LED to interior. Bergville t-lights.
 
  
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motivator
Silverstone


Joined: 06 Jun 2014
Posts: 106
Location: Purley


PostPosted: Tue Jul 18, 2017 9:19 pm    Post subject: Reply with quote

Kerb Scaper, I had tried to work the contacts on the bulb into a more bow shaped form, so that they might make better contact. But I have not tried working on the socket contacts, it looked far to tight to get in there. If the new bulb doesn't work that will be my next step.

I don't intend to be defeated by this!
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1997 993 Cab
Ex 1977 Minerva Blue 3.0 SC coupe
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1051
Location: Spain


PostPosted: Wed Jul 19, 2017 8:16 am    Post subject: Reply with quote

Well mine does not light up Mad Until I read this post I didn't know it was supposed to, I just love this forum. My front and rear fog light and heated wing mirror switches all light up but not the headlight. I may just leave it as is or investigate further. Dont know

I did a search and this topic came up in 2008:

http://www.911uk.com/viewtopic.php?p=410511&sid=94236b7246a4866015d5ffda84891ca1

Some more info for those who are interested.

ATB Smile
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1995 993 C2 Cab TipS in Guards Red
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1051
Location: Spain


PostPosted: Thu Jul 20, 2017 1:33 pm    Post subject: Reply with quote

Bulb replaced and all now in working order Very Happy 2 Bosch bulbs for €1.95, I used the plastic lever you get with a tablet battery replacement kit so no damage to the little cover. Bulb pulled straight out with a pair of tweezers and the new one just pushed back in Very Happy

ATB Smile
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1995 993 C2 Cab TipS in Guards Red
 
  
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Les Richards
Trainee


Joined: 09 Apr 2009
Posts: 70
Location: Harlow, Essex.


PostPosted: Thu Jul 20, 2017 4:12 pm    Post subject: Reply with quote

Further to this comment posted in 2008

Posted: Fri Aug 22, 2008 4:00 pm    
Post subject:
Just checked in the original porsche catalogue: no difference mentioned between later or earlier 993 models nor LHD or RHD.

The part number is 964 632 113 01 (ignition starter illumination), 900 631 132 90 for the bulb and 999 632 014 00 for the bulb holder.......

and costs less than a quid...
cheers

martin


There appears to be a space cut-out in the dash above the ignition switch...wonder if it is/was intended to fit these parts? Just wondering, that's all. Would need to remove the piece of the dash covering over the cut-out, though.

The parts are shown on the Porsche PET so it must be correct.

A check in the Bentley wiring diagrams could be interesting; the wires may already be there. Now there's a thought. Smile
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Les Richards

993
Polar Silver
5152 MU
 
  
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Allan E
Newbie


Joined: 17 Jun 2017
Posts: 35
Location: North-East England


PostPosted: Thu Jul 20, 2017 5:15 pm    Post subject: Switch illumination Reply with quote

Yes I noticed the cut out just above the ignition switch where a small light would be located, not sure how to wire in as it has to illuminate when the ignition is turned on and go out when the car is started.
It seems much easier to replace the key battery, assuming you have a key with a light built in.
 
  
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Allan E
Newbie


Joined: 17 Jun 2017
Posts: 35
Location: North-East England


PostPosted: Thu Jul 20, 2017 5:17 pm    Post subject: Switch illumination Reply with quote

Yes I noticed the cut out just above the ignition switch where a small light would be located, not sure how to wire in as it has to illuminate when the ignition is turned on and go out when the car is started.
It seems much easier to replace the key battery, assuming you have a key with a light built in.
 
  
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motivator
Silverstone


Joined: 06 Jun 2014
Posts: 106
Location: Purley


PostPosted: Tue Aug 08, 2017 6:33 pm    Post subject: Reply with quote

OK I think it is definitely down to the bulb. I have tried several 286 bulbs and thought I had cracked it recently, when I went to back the car out of the garage...it came on, however by the time I got to the bottom of the drive it went out again, and no matter what I did it wouldn't work again.
So at long last I received my "Osram 2721" which went in and worked straight off. So I believe the Headlight switch needs that specific bulb to work.
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1997 993 Cab
Ex 1977 Minerva Blue 3.0 SC coupe
 
  
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