This Electrical Schematic Diagram applies for 1972 Honda CB125 and CB160 series. In this electrical system manual you will find complete description of Honda CB125 and CB160 electrical components and its wiring harness. Electrical components of CB125 and CB160 model are generally divided into following schema: Generator (AC generator), Ignition (ignition coil, contact breaker, and spark plug), Rectifier (Silicon), Battery and Load (lamps, horn and motor capacity).
Actually, the electrical systems vary according to motorcycle type/model, installation method and wiring. In CB125 and CB160 models the battery ignition system is employed, and since it uses AC generator and ignition coil, quick starts are obtained (even during battery discharge).
Download the complete 1972 Honda CB125 CB160 Electrical Schematic Diagram here (33 pages of pdf.filetype documents)