Quote:
Originally Posted by Fatal_chemical
I have an83 om617 in my wrangler. I just put a new alternator in it and it still won’t charge. If anyone else has done this swap can you please run me through where the wires go that pertain to charging? I have one from battery to alt, one from battery to starter, and one from battery to the distribution doodad. I’m reading only 12 volts.
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Assuming you have the stock Alternator with the connector that as 2 wide slots and one slot that is narrow.
The Narrow Slot on the Mercedes would go to the charging (idiot Light) and the Light Bulb needs to be at least 3 watts (some sources say 4 watts) and that provides enough resistance to excite the Alternator to charge. The Wire that goes to that on my Car is a thin blue colored wire.
Also part of the Alternator Circuit appears to go into the Head Light Switch. However, I don't know how that works or effects the charging.
The 2 fat red wires (that go to the 2 large slots on the connector) appear to both eventually end up connected to the + Battery voltage.
If someone could post a free online site of the Mercedes Manual and you could look at the wiring diagram.