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Tinkering Pays!!
 
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Join Date: Sep 2008
Location: New Orleans
Posts: 1,365
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Speedometer Wiring?

Without posting a picture, I'm questioning the wiring of my speedometer. It used to work before I removed it while chasing another wiring issue under the dash... There are three wires that feed the speedometer: Red w/Black; Brown w/Red; Brown w/Red...

There are four posts on the top. As I look from the rear of the gauge from left to right, I have the following:

1. Red w/Black [Power]
2. Empty
3. Brown w/Red
4. Brown w/Red

Q: Is this correct? and, how do I differenciate between the two Brown w/Red wires? Or, does it matter cuz they do Ohms for the speedo?

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LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 10-23-2010, 02:06 PM
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Here is a good thread regarding speedo wiring:
Electronic Speedometer Wiring
Old 10-23-2010, 04:58 PM
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Tinkering Pays!!
 
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Join Date: Sep 2008
Location: New Orleans
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yes, that helped - thanks!

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LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 10-23-2010, 05:12 PM
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