Possible reasons why the electrics in the car do not work:
Electrical system:
* Dead battery.
* Loose or corroded cable connections and terminals.
*Blown fuse or relay.
* Faulty generator or starter.
Mechanical problems:
* Damaged or pinched wires.
* Broken or incorrectly installed switches.
* Problems with the ignition switch.
Other possible reasons:
* Problems with the vehicle computer (ECM/PCM).
* Faulty electrical components such as headlights, power windows or air conditioning.
* Oxidation or corrosion in the electrical system.
Troubleshooting steps:
1. Check the battery: Examine the battery for signs of corrosion or damage. Using a voltmeter, measure the battery voltage with the engine off and on. It should be around 12.6 V when the engine is off and above 13 V when the engine is running.
2. Inspect cable connections: Check all battery terminals and other electrical connections for looseness or corrosion. Clean and tighten any loose connections.
3. Check the fuses: Locate the fuse box in your vehicle and check the fuses for blown fuses. Replace blown fuses with new ones of the same rating.
4. Test the generator: Check the voltage at the generator terminals with the engine running. It should be around 13.5-14.5 V. If the voltage is lower, the alternator may be faulty.
5. Inspect Electrical Wiring: Visually inspect electrical wiring for damage, breaks, or pinches.
6. Test other electrical components: Check the functionality of other electrical components such as headlights, power windows and air conditioning.
7. Visit a mechanic: If you cannot fix the problem yourself, take the car to a mechanic for further diagnosis and repair.
Safety Tips:
* Disconnect the negative battery terminal before working on the electrical system.
*Use insulated tools and wear protective gloves.
* Do not attempt to repair the electrical system unless you have the necessary knowledge and experience.