[s-cars] Need list wisdom.

[Mark Strangways]

Ok, just back from a long drive ( like 3 hrs).
Car ran fine as much power as I could use in the snow storm. But once to my
destination, the car had to be boosted.
So I tried to be a could responsible power user and conserve on the way
home, no heated seats, no stereo, no fogs.etc.
And once again caught home, and no start.

I did measure voltages before shutting down. At idle it was around 13.8
volts.
Turning on accessories dropped it to 13.5 but that was with everything on
and at idle.
What worries me a bit is the fact that instead of increasing with revs the
voltage actually decreased with more revs.
This is odd, kinda tells me my car has been reading the tread about new
alternators and such.
Any collective thoughts ?
What is NORMAL idle voltage and what does it climb to say at 3000 RPM ?

Thanks in advance,

Mark S