Possible reasons that the car will not start due to electrical problems:
1. Defective battery
*Weak or dead battery
* Damaged battery terminals
*Corrosion on terminals
2. Faulty starter
* Faulty starter solenoid
* Broken or damaged power cables
* Breakdown of the retractor relay
3. Faulty ignition system
* Faulty ignition coil
* Damaged spark plugs
* Faulty switch or ignition module
4. Wiring problems
* Breaks in wiring
* Short circuits
* Damage to wire insulation
5. Faulty generator
* Faulty voltage regulator
* Open circuit in the excitation circuit
* Damaged diodes or windings
6. Faulty starter relay
*Stuck relay
* Damaged contacts
* Faulty control circuit
Diagnostics and troubleshooting:
* Battery check:
*Measure the battery voltage with a multimeter. It should be around 12.6 V.
* Inspect the battery terminals for corrosion or damage.
* Starter check:
* Tap the starter to free the stuck solenoid.
* Measure the voltage at the starter terminals when the ignition is turned on. It should be around 12 V.
* Check cables and connections.
*Checking the ignition system:
* Remove the spark plugs and check for spark.
* Measure the resistance of the ignition coil.
* Check the switch or ignition module.
* Wiring check:
* Visually inspect the wires for damage.
* Use a circuit tester to check wire continuity.
* Generator check:
* Start the engine and measure the voltage at the battery terminals. It should be around 14 V.
* Check the voltage regulator and field circuit.
* Checking the starter relay:
* Inspect the relay for damage.
* Replace the relay if it is faulty.