I'm currently in the middle of an engine conversion. Converting my 1999 316i compact to 2.8 from a 1996 328i saloon.
Firstly, we've noticed that the main connector (x20 connector, 25 pins) between engine wiring loom and the rest of the car has some pins in different places. The 328's side also has an extra pin in use, presumably for the MPG gauge.
So in order to match the pins up, I need wiring diagrams for the x20 connector for a 1996 328i and a 1999 316i compact.
Secondly, my car is infact an EWS 3! An EWS 3-D module to be exact. The 328 donor car was an EWS 2. However both have 15 pins, both have the same connector and both have 3 pins not in use. In terms of the colour of the wires, 8 match, only 4 don't. The two thick wires used for the starter circuit in pins 1 & 3 of EWS 2 cars are also in my cars EWS 3 module, same colour, just different places - pins 7 & 8.
I have the wiring diagram for the EWS 2 module from the Bentley manual, but is this reliable as its America...?
Otherwise I need wiring diagrams for a 1996 328i EWS 2 module and a 1999 316i EWS 3 module.
Same as the x20 connector I'm hoping to rearrange the wiring of my cars connectors to suit the donor parts. Or if anyone knows a better way than I'm all ears!
Any other help and advice is also welcome