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304065's Avatar
 
Join Date: Dec 2001
Posts: 9,569
Porsche Crest Wiring Diagram

Ok, the diagram reveals all (as ever)

Red/black is switched +12v (to + terminal)
Black with blue stripes are the instrument illumination bulbs
White with blue stripe is the high-beam indicator bulb
Black with purple is tacho sense
Brown is the ground
White/red ???

Is anything labeled on the back of the gauge?
Attached Images
File Type: jpg sc tacho.jpg (32.3 KB, 1302 views)

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Old 07-11-2002, 08:00 AM
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Barry2's Avatar
 
Join Date: Nov 2002
Location: DFW, Texas
Posts: 87
Porsche Crest


Hey John,

Do you have one of those for an '87 930 tach with a boost guage?

Thanks!
Barry


Last edited by Barry2; 03-08-2003 at 01:02 AM..
Old 03-08-2003, 12:31 AM
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Looks like the trigger signal from the dizzy...or the ignition pulse source.
Bob
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Bob Hutson
Old 03-08-2003, 09:19 AM
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Join Date: Jun 2002
Location: Belgium
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Lightbulb

Hi John,

Red/White (I13) goes to your OXS relay...

Good luck,
Bart.

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Old 03-08-2003, 10:25 AM
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