. Autolight is designed to control the vehicle lighting system by automatically switching the lights on as it gets dark and off when it gets light. This system allows automatic control of your lights without manual operation. It is safe, easy to install, and does not affect the vehicle's lighting or electrical system. Warning: This product involves modification to the vehicle's electrical system. Professional installation by a qualified automotive electrician or technician with experience in vehicle circuits is strongly recommended. Attention: 1. This unit is designed for vehicles with 12V DC only. 2. Professional installation is recommended. 3. Use the same type of cable for any extensions. 4. Perform a test after installation is complete. 5. The light sensor sensitivity is adjustable. Key features: 1. Automatically turns lights on when it gets dark and off when it gets light. 2. Adjustable light sensor sensitivity. 3. Quick response time.