The diodes on the load side of the alternator are on the stator.
The alternator is a three phase type with a power diode pair for
each phase (full wave rectifier). If one of these diode pairs short on
any phase of the stator, there is a direct path to ground through these
shorted stator diodes. These diodes are hard wired in and there is no
break in the circuit if the car is off (other than high current fusible
link/mega fuse). There is no current flow if the diodes are intact
(non running car). If any phase pair is shorted, the current flow will
be from the battery through the shorted diodes to ground. I this case,
the "LOAD" is the shorted pair of stator diodes. Does it happen often?
no. But its possible.
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