I documented installation of the main wiring harness on this project and posted it here.
I made a short video to show the routing I used and where the front turn signal, neutral switch, voltage regulator, starter relay, coils, Dyna III electronic ignition, oil pressure switch, neutral switch and rear tail light/turn signal wires go.
It includes links to two other write-ups: The first describes the wiring connections to the diode board, alternator, points, and starter motor when I replaced the timing chain; The second write-up shows the details about the circuit board connection areas inside the headlight shell and how to connect the right handlebar switch inside the headlight shell.
- 11 BMW R75/6 Replace Timing Chain, Crankshaft Sprocket, Nose Bearing
- 61 BMW R75/6 Replace Left Side Handlebar Control Switch
I hope these write-ups will be helpful when you are installing these components and/or putting a wiring harness back into your bike.