Alternator Issue

Bernie Benz b.benz at
Fri Jul 25 17:03:02 EDT 2003

Hi Mike, a Q below.

> From: Mike Miller <mikemilr at>
> Date: Fri, 25 Jul 2003 13:56:02 -0600
> To: 200 20v List <200q20v at>
> Subject: Alternator Issue
> I'm seeing the red indicator lights for battery and brake  dimmly light up
> when drivingor I put the car under an electrical load. The Alternator is
> putting out over 14v on the Climate Control Head, at the battery post under
> the hood and at the battery. Driving down the road, the CC Head reads
> 13.5 -> 14v, until the fan comes on - then it drops to about 12.2. If I turn
> on the A/C, I only get about 10.9v on the CC head, but I still see over 13v
> at the battery.
13V actually at the bat, or at the jump terminal?  Big diff!  The jump
terminal is fed directly from the starter terminal and the alternator, so
would show true alt output voltage.  The line back to the battery I
understand (no BTDT) is spliced somewhere in its length and this joint can
cause a high resistance voltage drop to the battery.  Search the archives as
to where this splice is located, it's been discussed here before.

> Any ideas? I've checked and the belt is tight.
> thanks,
> mike miller
> helmville mt
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