Note 1: 2-wire and 3-wire alternators seem to be identical, the only difference being how many brown wires are connected to the plug and hence the alt. Where two brown wires are used, one thick and one thin, the thin wire is a voltage sensing wire. Later models had two thick wires, these are both output wires for a higher current carrying capacity.

Note 2: V8s used the 1971-72 system i.e. a single thick brown with a Delco alternator. The battery cable terminates at a toe-board stud on the RHS then a short length of cable from there to the starter, two brown wires go from this stud to the alternator and rest of the cars electrics.

Note 3: On North American spec 1976 models (no ignition relay) there are two thick browns from the alternator to the solenoid, and from the solenoid to a white connector block by the fusebox (shown below, arrowed), to increase current carrying capacity. From here one brown feeds the fusebox and ignition switch, the other the main lighting switch. A third brown from the solenoid feeds the starter relay and hazard flasher fuse.