WARNING: This page is about a different car, the 2004 MINI Cooper, 2003 MINI Cooper, and 2002 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Charging System Wiring Diagram (Cooper With Denso Generator)
Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Charging System Wiring Diagram (Cooper With Valeo Generator)