I started the engine and measured from 1.A. and 2.   to the negative
terminal on the engines battery post.  Here are my readings:

At 1.  :  14.1 volts
At A.  : 14.9 volts
At 2.  :  14.1 volts

Does the fact that im not getting 14.9 volts at either 1. or 2. indicate
that these batterys are fully charged so A. is not being connected to
either 1. or 2.  ?
It was my understanding that A. was connected 1.  or  2.   , whenever
the motor is running.  

Thanks,