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Join Date: Apr 2010
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Swapped engines, now no oil level or Tach??

Morning, I will preface this post by stating that wiring is not my strong point. I have a Euro '78 911SC with a 930/03 3.0 liter that I just swapped out for a rebuilt
'79 930/04, 3.0 litre . The '79 came complete plug & play. After the install the tach and oil level gauge no longer work. On the main plug the 11 pins are all in the same location. Any help is appreciated.

Joe in NH


Last edited by joe18d; 08-04-2019 at 12:22 PM.. Reason: typo
Old 08-04-2019, 06:23 AM
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ROW '78 911 Targa
 
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Join Date: Jul 2011
Location: Salem, OR
Posts: 10,214
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Oil level wire(s) on tank knocked off? The signal wire from it is not part of the engine harness, so engine swap didn’t cause it.
Tach wire is run from CDI plug to 14 pin connector in engine harness. Easy to test for continuity.
May be a loose connection.

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Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
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Old 08-04-2019, 08:23 AM
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