[zeshan]

### **1. Common Headlight Issues in VAZ/Lada Cars**  
- **Older Lada models** (such as the **Lada Niva, Lada Samara, or VAZ 2107**) often face problems like burnt-out bulbs, faulty wiring connections, or foggy/dim headlights.  
- **Water leakage (moisture)** can enter the headlight unit, reducing visibility.  
- **Electrical wiring issues** may also cause headlight failure.  

### **2. How to Replace Headlights**  
Replacing headlight bulbs in most **VAZ/Lada** cars is simple:  
1. **Remove the rear cover** of the headlight assembly.  
2. **Disconnect the old bulb** from the wiring connector.  
3. **Install the new bulb** (usually **H4 or H7 type**) and reconnect the wiring.  
4. **Reattach the cover** and test the headlight.  

### **3. If the Headlight Isn’t Working at All:**  
- **Check the fuse** (the fuse box is usually located under the dashboard).  
- **Inspect the relay** (if the car has a headlight relay).  
- **Warning!** If you’re unsure about electrical issues, consult a professional mechanic.  

### **4. Upgrading Headlights**  
Some drivers upgrade their **Lada’s headlights** to **LED or HID lights**, but this may require additional wiring or a control unit.