Installing Bluetooth speakers in an older car without built-in Bluetooth can be done by:

• Using a Bluetooth adapter: Connect a Bluetooth receiver to your car's existing stereo system via AUX or RCA inputs.
• Replacing the stereo head unit: Upgrade to a Bluetooth-enabled car stereo that supports wireless audio streaming.
• Installing a Bluetooth speaker system: Some systems come with built-in amplifiers and speakers designed for vehicles like ATVs and cars, which can be mounted and wired directly.

Each option varies in complexity and cost, so consider your comfort with installation or seek professional help for best results.

Connecting your phone to Bluetooth speakers in your car or ATV typically involves these steps:

1. Turn on the Bluetooth speaker system and enable pairing mode, usually indicated by a flashing light.
2. On your phone, open Bluetooth settings and search for available devices.
3. Select the speaker system from the list of devices to pair.
4. Once connected, you can play music or take calls through the speaker.

Some systems also support AUX or TF card inputs for alternative connections. Remember to keep your phone within range and ensure the speaker is charged or powered for uninterrupted use.

Choosing the right Bluetooth speaker for your car or ATV depends on a few key factors:

• Compatibility: Make sure the speaker system is compatible with your vehicle type, whether it's a car, ATV, UTV, or golf cart.
• Weatherproof Rating: For outdoor vehicles like ATVs, look for IPX5 or higher waterproof ratings to withstand rain and dust.
• Sound Quality: Consider speakers with full-range drivers and tweeters for clear, balanced sound.
• Power and Amplification: Built-in amplifiers can enhance volume and clarity without needing extra equipment.
• Connectivity: Bluetooth version and additional inputs like AUX or TF card slots add versatility.

Evaluating these features helps you find a speaker system that fits your needs and environment.