While some accessories in your car are electrically powered by the charging system, others use the engine itself as their power source. The power for these accessories is delivered by a system of pulleys and belts. Examples of these accessories are:
- Water Pump for engine cooling
- Power Steering Pump
- Air Conditioning Compressor
- Radiator Cooling Fan
Many late model cars use a single serpentine belt in place of individual belts to drive these accessories.