Damn near every electron in that car flows thru the ammeter. Bypass the p.o.s. ammeter by bolting the connectors to the same stud and bypass the bulkhead connector (search the site) or risk burning your car down.
Simply not true.
The battery doesn't run the car. The alternator does. The ammeter only shows whether the battery is charging or discharging. Only during those times electrons flow through the ammeter. In fact thats what ammeters measure, rate of electrons moving through a circuit.
Nor is the ammeter a source of car fires. In fact it shows when a high current situation is occuring in that line - which may alert the operator to a situation where something may melt or fail (like the battery or a connection). A voltmeter can't show that. It provides good clues to other situations. Neither one is better or worse, just different.