e30 325i sport pre-facelift - plug near ECU

[jimbom30cab]

Anyone know what this plug is for on my 325i E reg 1987 pre-facelift (tech 1), it's right by the ECU harness.



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cheers

jim

[Kedge]

Am I right in thinking you're converting the Tech 1 to M1.3?

If so you need to read this;
http://www.e30zone.net/e30zonewiki/inde ... tronic_1.3

Namely this section, that in your hand it the plug I'm talking about (C104);

What wiring does need doing is for instrumental purposes only and is easiest to carry out on the ECU plug end. There are two wires you need to cut on the ECU plug and then connect to the C104 plug which will now be unconnected following the removal of the old loom. The easiest thing to do is cut the matching plug from the old loom and plug it into the loose plug in the car. Then you need to connect pin #1 (Blk/Blu) on the C104 to pin #6 (Blk) on the ECU, the second connection to make is to connect C104 pin #3 (Wht) to ECU pin #32 (Wht/Blk), C104 pin #2 is not used.

[jimbom30cab]

Kedge, you're a legend, thanks