As said, I still have to connect the right wires to get the RPM and fuel economy signals to the dash:

Not my strongest point, sorting out the loom. This gave me a real headache… For the first time I was doing wiring and I couldn’t get my head round. None of the schemes I’d found told me the right thing (couldn’t find wiring schemes from a type 1 E28). Fortunately a good friend and college […]

Time to fit the engine loom and make a start with the custom loom (part between the m52 ECU and E28 car/dash loom):