I was curious as to the real status of my '88 battery and charging system.
The analog factory meter seemed off in the way the heater fan motor for instance, affected it. I got out the trusy old Simpson, and checked it out.
at rest after driving home from work, 12.85V - dash read 12.5
1st pic, 25mph, lights high, fan hi, 13.37V -dah read 13.0
2nd pic, 25mph, lights lo, fan lo, 13.48V - dash 13.25
3rd pic, idle, fan hi, 14.22V - dash 13.0
4th pic idle, fan lo, 14.33V - dash 13.5
So over the entire scenario, the digital meter reflected a change of 1.48V
and the analog dash meter, 1V
I assume it is some ground situtation and that the analog meter is lower impedance.
Also it shows me that with engine running, under these 4 conditions, the regulator is working at .86V variation.
http://i217.photobucket.com/albums/cc178/cygnus58/lightshifanhi.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/lightslofanlo.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/idlefanhi.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/idlefanlo.jpg
The analog factory meter seemed off in the way the heater fan motor for instance, affected it. I got out the trusy old Simpson, and checked it out.
at rest after driving home from work, 12.85V - dash read 12.5
1st pic, 25mph, lights high, fan hi, 13.37V -dah read 13.0
2nd pic, 25mph, lights lo, fan lo, 13.48V - dash 13.25
3rd pic, idle, fan hi, 14.22V - dash 13.0
4th pic idle, fan lo, 14.33V - dash 13.5
So over the entire scenario, the digital meter reflected a change of 1.48V
and the analog dash meter, 1V
I assume it is some ground situtation and that the analog meter is lower impedance.
Also it shows me that with engine running, under these 4 conditions, the regulator is working at .86V variation.
http://i217.photobucket.com/albums/cc178/cygnus58/lightshifanhi.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/lightslofanlo.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/idlefanhi.jpg
http://i217.photobucket.com/albums/cc178/cygnus58/idlefanlo.jpg