15/04/2026
Fuses protect electrical circuits by melting when the current exceeds their rated value, cutting power to prevent damage to components like lights, radio, climate control, fan, and alternator. The '100A' fuse protects the main battery charging system.
car fuses and how they protect different electrical components in a vehicle. Here’s a clear breakdown:
🔴 10A (Red) → Powers Headlights
🔵 15A (Blue) → Powers Radio system
🟡 20A (Yellow) → Controls Window & Lock controls
⚪ 25A (White/Transparent) → Used for Auxiliary switches
🟢 30A (Green) → Handles Climate control (AC system)
🔴 40A (Red) → Runs the Radiator fan
🔵 100A (Blue) → Protects the Alternator / main battery system
⚙️ Key Understanding
Higher amp fuse = handles more power
If a fuse blows:
The connected component (like radio or AC) will stop working
It prevents serious damage or fire
⚠️ Important Tip
Always replace a fuse with the same amp rating
Using a higher-rated fuse can damage the car’s electrical system
