The 2006 Aprilia RS125 charging system wiring and main power supply circuit consists of: main rave, fuses, regulator, ignition system, battery and light system.
Charging system test:
• Start the engine and rev it up to 6000 rpm.
• Connect a tester placed into voltmeter mode across battery terminals.
• Turn on the low beam.
• Voltage reading should be between 13.5 and 15 V.