[Vwdiesel] Vwdiesel Digest, Vol 58, Issue 24

[LBaird119 at aol.com]

In a message dated 8/23/2008 6:17:07 PM Pacific Daylight Time, 
awaytothesea at yahoo.com writes:

> I have a question about a 1981 Motorola alternator that I have on my VW 
> pick-up. It is a model 9JG2ND2F49, and I believe it is a 65 Amp. I am wondering 
> what each of the three leads goes to, and if one of them can be used to drive 
> a tachometer for my diesel engine.
>  
> Thanks,
> Caleb
> 

 D+ is for the idiot light/field excitation 
 B+ is to the Pos. battery terminal
 W is a "tach" signal (AC)  Used for upshift light on earlier diesels and 
also a tach on the A2's.
     Loren


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