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Old 11-27-2018, 12:32 AM
80stech 80stech is offline
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 1,061
80stech is on a distinguished road
The extra pin is for remote voltage sensing and not used on the E83 but is used on the E53 with the Bosch Alternator for closer control of battery charging voltage.
1988 325is (purchased new)
2004 X5 3.0 (new to me) 2005 X3 2.5 (new to wife)
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