The JieRui-BT 5908 is a Bluetooth 5.0 audio adapter designed for streaming and hands-free calling, connecting via a vehicle's CD changer port or 12-pin AUX interface to provide high-fidelity sound. Key features include 5V–12V DC operation, support for various audio formats including FLAC and DSD, and an optional microphone for calls. For full installation instructions, see the JieRuiBT Installation Manual .
Some vehicles require a dealer tool to activate the factory AUX port function before it works. The audio quality is low or distorted. Lower the volume on your smartphone to roughly 80-90%.
Ensure the ground (black wire) is attached to clean, unpainted metal. If the issue persists, install an inline 3.5mm ground loop noise isolator. The device disconnects frequently. Jie Rui Bt-5908 Manual Pdf
Plastic trim removal tools (to prevent scratching your dashboard)
Control volume using both your phone and the car volume knob. Troubleshooting and FAQ The radio does not recognize the Bluetooth module. Ensure the red wire connects to a switched ACC source. The JieRui-BT 5908 is a Bluetooth 5
This blog post covers the essential details of the (JIERUIBT) Bluetooth music module receiver, based on technical specifications and user manual information from Foshan Jierui Electronic Commerce Co., Ltd.. Jie Rui BT-5908 Manual: Bluetooth Music Module Guide
Connect the to the GND (ground) port or the metal chassis of the radio . Some vehicles require a dealer tool to activate
Yes. The manual includes a "Static Measurement" appendix. You must use the optional clamp stand to hold the device steady. In static mode, average the reading over 10 seconds.
on the back—the gateway for the adapter's large plug. With a satisfying click, the adapter was seated. Now came the wiring: he carefully connected the red wire to the 12V ACC (ignition) power black wire to the ground (GND) , ensuring the module would wake up only when the car did. Step 2: The Blue Light Mark turned the key. A small