[-=Jeff=-]

Okay did some testing but the motor was freshly started and not warmed up during these measurements.

Also I have an aftermarket Stereo with an amp..

Here is what I got using my DMM connected to the battery:

Key on: 12.5v
Starting: 10.5v

Following are while running:

No Extra Acc: 14.7
Headlights On: 14.68
A/C & Lights: 14.6
A/C & Lights and Radio: 14.0v

same as above while watching A/C Compressor cycle on: 13.5v

Shouldn't the Alt hold the charge? or is it all owed to fall, Granted I need to redot he tests after it is warm too..

these were all done at idle, although I did increase the idle spedd a bit to see if thee was any change and there as not