Re: [alfa] GTV-6 voltage drops

["Gwynne W. Spencer" <gwynnes1@xxxxxxxxxxx>]

Either there is more current flowing than the designer allowed for, or he 
used too small a diameter wire. From previous discussions, I would favor 
the "too small a diameter wire" cause.  Try replacing the main wire paths 
with a couple of sizes larger wire.

Gwynne Spencer

At 05:15 PM 5/28/2004 -0400, you wrote:
>Thanks to some help from the digest, I figured out how to use my new 
>oscilloscope, and it appears that I don't have a bad diode in my 
>alternator, as I previously suspected.  So I took some voltage 
>measurements and it seems like I have a significant voltage drop problem, 
>much like last week's Spider discussion.  With engine not running, I see 
>12.0V at the big terminal block where the 8 gauge wire from the alternator 
>meets the wires running to the battery and the fusebox.  Fuse #5 to ground 
>shows 11.9V.  Fuse #6 (ignition switched) to ground shows only 
>10.4V.  With the engine running at 1000RPM (all accessories off) these 
>numbers become 14.5, 14.2, and 13.0, respectively.  With all the 
>accessories on at 1000RPM, these numbers are 12.1, 11.8, and 10.8.  If  I 
>don't hold it at 1000RPM, it idles really low (as it has a tendency to do) 
>and I only see 11.8, 11.2, and 10.2, respectively.  It would seem that 
>there is an unusually large drop across the ignition switch, but why am I 
>losing so much between the terminal block and the fusebox?
>
>Thanks,
>Joe Elliott
>'82 GTV-6
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