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Not sure. The passenger side alternator does have a ground wire that goes to the negative side of the designated, 24 V battery on the driver side.

The alternator that is putting out 24 V has the marking stamped on the case for a 12V. The alternator has a part number stamped on the case showing 12 V, also 105 A. I will probably open up the back of the alternator to see what 24 V regulator is there so I can order a spare.

FYI: Battery voltage with the engine off for the 12 V passenger side battery is 12.74 V. With it running it’s 14.58 V. Battery voltage with the engine off for the 24 V battery on the driver side is 24.80 V. with it running it’s 29.35 V. Alternator voltage with the engine off driver side...

its a 24 volt alternator single wire . GM manual had part number for it and spec. I lost all my saved info when my laptop crashed. 😞

I searched for a new 24 V alternator when I first got to LSSV. Just so that I could have a spare. I think the price I found was around $600 but there was none available. A good alternator repair shop should be able to fix the 24 V alternator you just might have to shop around to find the...

I can understand why some people would think connecting the wire to the NEG terminal doesn't feel right.

If you need more pictures just let me know.

12 volt alternator

This is my 2005 LSSV. 24volt alternator is on the left side of engine. The wire pictured goes to the neg terminal on the drivers side battery.

:shock: