To properly install an air suspension system in a car, it is important to have a good understanding of the process and necessary components. Here's a step-by-step guide to help you put an air suspension in a vehicle:

1. Research and gather the necessary components: Start by researching the specific air suspension system you want to install in your car. Look for reputable brands that offer kits designed for your specific make and model. You will typically need air springs, air compressors, air tanks, control valves, air lines, and an electronic control unit (ECU) to operate the system.

2. Prepare the vehicle: Before starting the installation, make sure the vehicle is parked on a flat surface and secure it by engaging the parking brake. It is also recommended to disconnect the battery to prevent any electrical issues.

3. Remove the existing suspension components: Begin by removing the existing suspension components such as coil springs or leaf springs. This process may vary depending on the type of suspension your car has, so refer to your vehicle's workshop manual for specific instructions.

4. Install the new air springs: Mount the air springs in place of the removed suspension components. Follow the instructions provided by the manufacturer to ensure proper installation. Make sure all bolts are tightened to the recommended torque specifications.

5. Install the air compressors and air tanks: Locate a suitable location for mounting the air compressors and air tanks. It is crucial to install them in an area that is well-protected and free from excessive heat and moisture. Securely mount these components using the provided brackets and hardware.

6. Install the control valves and air lines: Install the control valves in a convenient location near the air springs. Connect the air lines to the control valves, ensuring a secure and leak-free connection. Route the air lines away from any moving or hot parts, securing them with suitable clips or clamps to prevent rubbing or damage.

7. Wire the ECU and electrical components: Connect the ECU to the battery and wire it according to the manufacturer's instructions. This will involve connecting power, ground, and other necessary wires. If your air suspension system has additional features such as height sensors or a wireless control module, follow the manufacturer's instructions to wire those components as well.

8. Test the system: Once everything is connected, double-check all the connections and make sure the system is properly secured. Reconnect the battery and turn on the vehicle. Test the air suspension by engaging the system and adjusting the ride height using the controls provided. Check for any leaks, unusual noises, or improper functioning.

It is important to note that installing an air suspension system can be complex and may require advanced mechanical skills. If you are not experienced in car mechanics, it is highly recommended to seek the assistance of a professional to ensure a safe and proper installation.