Remember, the ONLY ammeter load on the battery side of the ammeter is supposed to be the battery. Nothing else. I fyou have anythign else there it will show up as a discharge on the ammeter.

not really sure what you meant. but just in case... anything being conected to batt post will show a CHARGE reading on ammeter when engine is running. When engine is off ammeter will stay centered because load won't be running through the ammeter. One fine example is the starter motor, which is sourced straight from batt and ammeter doesn't show that. It can be showing some discharge what ignition sucks or the starter relay trigger load because ign switch is between amm and alt hence into the ammeter reading from batt but not the starter motor load itself