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pbanders pbanders is offline
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Join Date: Jan 2001
Location: Phoenix, AZ
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Cary, I'm seeing the same thing. The part exists, it's shown on the factory 914 parts diagrams, but it apparently isn't on anyone's car nor is it shown in the factory workshop manual or aftermarket manuals. Several other owners have noted the poor nature of the alternator ground connection through the pivot bolt, and have added their own connection between the alternator case and chassis ground. How are they connecting it? It's still unclear to me what they're connecting to on the alternator case, unless it's the pivot bolt.

D- can be accessed from the alternator plug on the relay plate. The connections are actually printed on the plug, though they may be hard to read. D- is the one with the brown wire, it's the middle one of the three connections, the one that's closest to the rear fender. You can touch the back of the spade connector in the plug by sticking in a digital volt meter plug. You measure the DC voltage between D- and a chassis ground (there's a ground point right next to the relay board) while the car is running. D- should be very close to 0 V, but if you have a bad ground, you'll see a sigificant negative voltage, something like -0.5V or more.

Here's a diagram of the relay plate that shows the alternator and voltage regulator connections:

Last edited by pbanders; 01-10-2007 at 10:09 AM..
Old 01-10-2007, 07:48 AM
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