No amps reading on #2 alternator

[ronmarabito2002]

Today we checked out further the output of a re-built alternator on my
92WB. Found out it is putting out just fine, but not indicating at
the ampmeter on dash. We determined that the instrument was O.K..
George at BB indicated problem could be circuit breaker or Bosch
Relay. No problem with circuite breakers, but unable to tell which
Bosch Relay is involved.

There are 6 in a row in the battery compartment and all are wired the
same and with color codes that are identical. Short of trial and
error replacement, anyone have any experience with the problem or know
which relay it is?

Thanks,

R.E. (Ron) Marabito, Moderator