Wiring - s50 into e30

[Mohammed_A]

I have a 1986 320i, i am transplanting the s50b32 (euro) into my car, i am having a problem with the wiring(confused), when i had the m20 motor it was upgraded from 2.0 to 2.7 along with the wiring harness from the later model and the computer box (motronic) so i switched from having the ditributor on the side of the block to in front of the head.
The wires coming out of the fuse box have obviously been cut and re joined onto the motronic plug - are the wires te same to join onto the e36 plug??? im lost

[Mohammed_A]

anyone?????

[FredK]

Without more information, your guess is good as anyone else's.

If you can identify and list all of the colors of the wires that remain on the C101 plug, that would help us help you.

[DaveSmed]

Heck, even with the S50B32 there are some questions. What did it come out of? Z3? M3?

[Mohammed_A]

Without more information, your guess is good as anyone else's.

If you can identify and list all of the colors of the wires that remain on the C101 plug, that would help us help you.

i will make a list of the wire colours and post them, thanks

[Mohammed_A]

Heck, even with the S50B32 there are some questions. What did it come out of? Z3? M3?

it came out of a M3

[DaveSmed]

it came out of a M3

Good deal, Here's some to start you off then.

-X20 25 Pin
Pin  4  SW/BL  A/C Comp relay Input (-)     DME Pin 48
Pin  5  SW/GR  A/C Compressor Input         DME Pin 65
Pin  6  VI/GR  A/C Ready Input              DME Pin 64
Pin  7  GN     EWS                          DME Pin 66
Pin  8  GR     Fault Lamp                   DME Pin  8
Pin 10  BL/GE  Reverse Light Switch
Pin 11  BR/GE  Cluster thermo sensor
Pin 12  BR/VI  Cluster thermo sensor
Pin 13  GN/VI  Fuel Pump
Pin 14  SW/WS  VSS Input                    DME Pin 42
Pin 15  SW/GN  Poss. Unloader Relay
Pin 16  WS/GE  RoC Diagnostic Port Conn.
Pin 17  WS/VI  RoC Diagnostic Port Conn.    DME Pin 88
Pin 18  SW/GE  EWS/Start
Pin 19  WS/GN  SI Board Reset-To Diag Pin 7
Pin 20  SW     Tach Signal Out (Cluster)    DME Pin 47
Pin 21  GN     Ign+
Pin 22  GN/WS  02 Sensor heater rly, 10A
Pin 23  BR/GN  Oil Pressure Switch
Pin 24  WS/SW  Fuel Rate Signal (Cluster)   DME Pin 46
Pin 25  BL     Alternator D+


-X6031 12 Pin
Pin  9  BL/BR  Upshift Signal               DME Pin 62
Pin 10  BR/RT  Oil Temp Sender
Pin 11  SW/RT  Aux Fan relay                DME Pin 53
Pin 12  VI/SW  Oil Level Signal             DME Pin 17

[Massive Lee]

Mohamed, be aware that the US M3 motor is vey different from the rest-of-the-world, and that connections will differ. If you are handy with the French language, here are the connections for the real e36 M3 motor into your e30.

[rThor432]

^^Exellent post! Where did you come across that?

[Massive Lee]

^^Exellent post! Where did you come across that?

French e30 M3 forum. Traduction of that short article would be great as it highlights many glitches that most people are not aware of, because the real M3 motor is so different fro the US one.

[DaveSmed]

French e30 M3 forum. Traduction of that short article would be great as it highlights many glitches that most people are not aware of, because the real M3 motor is so different fro the US one.

Ah dammit. Lee, you wouldn't happen to be familiar with the swap, would you? This is the second reference to -X20 Pin 9 that I have seen for oil temp. My ETM for the UK M3 shows it going through -X6031

[Mohammed_A]

Mohamed, be aware that the US M3 motor is vey different from the rest-of-the-world, and that connections will differ. If you are handy with the French language, here are the connections for the real e36 M3 motor into your e30.

Thanks lee, this would help alot, first of all i am confused with the codes, which plug is which, c101 etc. which one would be on my car? and which on the m3 harness....

[DaveSmed]

I just checked, there is nothing in pin 9 on my harness. That list does NOT match my engine.

[DaveSmed]

Nvm. Lee, that list you posted is for the 3.0L I guess there are some connector differences between 3.0L and 3.2L

I'd love a translation of that article though.

[Mohammed_A]

Here is some pics of the wiring as well as a list of what goes into where, hope somebody can help.....













C101 ------------------------ FUSE BOX

1 - BLUE ----------------------- 2X BLUE
2- BLUE/BLACK ------------------------ XXX
4- BROWN/striped ----------------------- BROWN
5- BLACK/BROWN ---------------------- BLACK/BROWN
6- GREEN/YELLOW ---------------------- GREEN/YELLOW
7-GREEN ---------------------- GREEN
8- YELLOW/WHITE ---------------------- XXX
9- BLACK ---------------------- XXX
10- PURPLE/GREEN --------------------- PURPLE/GREEN
11- WHITE/BLUE --------------------- WHITE/BLUE
12- BROWN --------------------- XXX
13- PURPLE/RED ---------------------- PURPLE/RED
14- BLUE/YELLOW ---------------------- BLUE/YELLOW
15- BLACK/YELLOW --------------------- XXX
18- BLACK/YELLOW -------------------- BLACK/YELLOW
20- BROWN -------------------- XXX


all XXX denote the wire is just loose and not connected to anything