- Headlights: Typically have a single filament bulb operating at 12 volts.
- Starter Motor: Smaller in size and draws less current compared to a 24-volt starter motor.
- Battery: Usually has six 2-volt cells connected in series to produce a total of 12 volts.
- Electrical Components: Designed to function at 12 volts, including light bulbs, power windows, and audio systems.
24-Volt System:
- Headlights: Often equipped with dual-filament bulbs with separate filaments for low and high beams, operating at 24 volts.
- Starter Motor: Larger in size and capable of drawing more current, necessary for starting larger diesel engines.
- Battery: Typically consists of two 12-volt batteries connected in series, resulting in a combined voltage of 24 volts.
- Electrical Components: Designed to operate at 24 volts, such as heavy-duty light bulbs, power windows, and audio systems suitable for larger vehicles.