[MaxBell]

13 Fuel Pump Relay Green/Violet Green/Violet (13)
14 --- --- ---
15 --- --- ---
16 RXD (pin 6 of diag) White/black No use (ignore)
17 --- --- ---
18 Starter Black/yellow Black/yellow (18 )
19 --- --- ---
20 --- --- ---


THEN:

M50 wires that go to C103 in gloves box
Pin Function Wire on C103
20 (black) Engine speed Black
24 (yellow/white) Instrument cluster White

THEN:

M50 wires that go to ??? for oil level
I've got an oil level sensor on the 525i E34 oil pan, what do I connect where?