[alfa] GTV-6 voltage drops

[Joe Elliott <jee@xxxxxxxxxxxxxx>]

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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