The Honda Shadow VT1100 electrical system are equipped with a 12-volt battery. The charging system uses an alternator consisting of all flywheel (rotor) with permanent magnets that rotate around a stator coil of copper wire. The alternator produces alternating current, which is then converted to direct current by the regulator/rectifier (controls the charging system outputs.
The following file (downloadable PDF file) which actually service manual of Honda Shadow VT1100, contains detail information regarding Honda Shadow VT1100 Wiring Diagram and Electrical System Troubleshooting procedures. This manual covers discussion on checking and replacement of alternator, battery charging/ removal/ inspection/ maintenance and installation, charging system, clutch switch and diode, electrical troubleshooting, fuses, headlight bulb replacement, horn check and replacement, ignition main switch, instrument and indicator lights, lighting system, turn signal, starter relay, etc.
Find more info about Honda Shadow VT1100 Wiring Diagram and Electrical System Troubleshooting Guide here on page 196 – 227 (free download PDF file from