BMW ECM, Pin-out Help

[KickerBMW]

Hi,

Posted this on several forums on the off-chance someone can help so far not had much luck so thought I'd put it to the PH massive.

Require some technical information on my car basically I'm trying to fit an after market rev limiter (Bee*R) to my 325 engined 320 and need to obtain some pinout information for my ECM. I need to know which pins on the ECM provide the RPM signal (Tacho) and the Ignition signal. I've cross referenced the Bosch DME number and BMW part number on my ECM and got this info...

Year: 1994

Make: BMW

Model: 325IS

Sub-Model: Base

OEM Number: 0261200413

Engine Type: L6-2494cc

Litres: 2.5L

Engine Desc: M50

Fuel Delivery: FI

Remarks: Standard System

Part Number: ECU112774

If anyone could give me the pin numbers or even better a diagram for the ECM in question that would be great as I'm having real difficulty finding out and the BMW service manual I've got is useless.

Ash