When I swapped my 3 liter for the 3.5 liter engine my original intention was to convert to injected. This project was too large in scale so I converted to 3.5 liter with dual down draft Webers. As this happened I was sent all the wiring schematics, original microfiche and a BMW Electrical troubleshooting Manual. Including a E28 to E9 cross reference list of which wires to swap. If anyone is interested I can reproduce this it may be too large to post on the technical site.