Well - looked over everything, checked the grounds - good ground to the batt and engine.

Tested the car - good volts 13.8 or so driving. Midway thru the drive - volts went to 11.2 -- bad . . .

I checked the volts at the battery. Engine off - 12.15 or so. When engine is running it goes to 11.8 and the SECS monitor reads 11.6 or so.

New battery, new alternator, and worked fine for a ten minute drive till all of a sudden . . .

My rear liesene plate light is not working and doesn't seem to be getting any volts to it - maybe something to that?

Should I pull out all the fuses for lights and stuff and try to check each one?

Maybe bad cable to alternator? Does the cable go from the alternator right to the fuse box?