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No, it grounds on the engine... 900 1993

uid 18083's pic
posted by  lucid on  Fri Nov 21 06:32 CST 2008
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

The ground is the body NOT the engine,that is why the battery terminal connects to the body...:

The (-) battery terminal has 2 cables—one to the body and one to the engine.

The Power Stage circuit ground (black) is the one I mentioned, going to the rear fuel rail bracket, which is also the main ground point for the LH ECU (black). The EZK CU main ground (brown) is on the front fuel rail bracket.

The heat sink bolts to the body probably assist in heat transfer, but I doubt they have anything to do with circuit operation.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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