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1989 E32 M70
       DEVICE NAME BMW CODE PLUG
PIN
WIRE
earth
X784- -* 1.5 BR
  FUEL PUMP I M2
power
X784- -
1.5 GN VI
X638-05
1.5 GN VI
X260-07
1.5 GN VI
X13-24
1.5 GN VI
<2.5 amp fuse in front power distribution box> F23- -
1.5 GN VI
X20-13
1.5 GN VI
X1875- -
1.5 GN VI
  FUEL PUMP RELAY I K210 X1607-02
  FUEL PUMP RELAY I, switched power source for pump X1607-07
   X1822- -
2.5 RT
  START MODE: power X1607-04
      X1802- -   
1.0 SW GE
  START MODE: earth X1607-06
   X1608-06
0.5 BR
  RUN MODE: power from
MAIN RELAY I  K212
X1607-05
X1605-02
0.5 GN GE
  RUN MODE: pulse earthed through
DME I  together with ignition coil I.
X1607-01
   X1806- -
X1600-01
1 SW
2.5 SW
When engine is running, fuel pump relay I powers the pump with a pulsed signal; one pulse
each time a spark plug is fired.
*X784- -, F23- -, X1875- -, X1822- -, X802- -, and X1806- - are terminals so have no pin numbers.