BMW M52 engine.
Black mot88 connector lock is slightly different from the natural color M50 (either type can be used with a bit of filing).
The mot88 pinout is VERY different. So do NOT plug into the other type.
See [M50-vanos-vs-s50b32.xls] columns.
See MembersPage/BmwMFiftyTwoMainRelay Prelling - solved by adding diode: anode=ec36/25 >| cathode=mot88/54 = mot88/65