We have the CMP20, and everything is working as it should, except for the Chassis Voltage reading, which is 1.3 volts.  
But I feel confident that the battery and charging system is operating correctly.  Both the Dash gauge and the Silverleaf VMSpc are showing a charge state of 13.8 volts.
So, my question is where is the CMP sensor located for the Chassis batteries?
Thanks for the help,