* Wires overheating and catching fire: This is the most serious risk. High current can generate significant heat, potentially igniting the insulation on wires and causing a fire.
* Damage to electrical components: Excessive current can damage sensitive electronic control units (ECUs), radios, alternators, and other components. Replacing these components is much more expensive than replacing a fuse.
* Battery drain: A short circuit can drain the battery quickly, leaving you stranded.
In essence, fuses are inexpensive, replaceable safety devices that prevent much more costly repairs or even a dangerous fire. They're strategically placed throughout the vehicle's electrical system to protect different circuits.
