Introduction
This manual provides instructions for the proper installation, operation, and maintenance of your dreeong 3.5mm AUX Input Cable. This cable allows you to connect external audio devices with a 3.5mm headphone jack to compatible Pioneer car stereo head units, including models DEH-P6600R, DEH-P9600MP, DEH-P3100UB, and DEH-P4100SD.
Setup
Follow these steps to properly install your AUX input cable:
- Identify the AUX Input Port: Locate the multi-pin AUX input port on the rear of your Pioneer car stereo head unit. This port is typically labeled or can be identified by its specific connector shape.
- Connect the Multi-Pin Connector: Carefully align the multi-pin connector of the dreeong AUX cable with the corresponding port on your Pioneer head unit. Gently push until it clicks securely into place. Do not force the connection.
- Route the Cable: Route the 3.5mm end of the cable to a convenient location within your vehicle, such as the glove compartment, center console, or dashboard. Ensure the cable is routed safely, away from moving parts, pedals, or areas where it could be pinched or damaged.
- Secure the Cable: Use cable ties or clips (not included) to secure the cable, preventing it from interfering with driving or becoming entangled.
- Activate AUX Mode: Refer to your Pioneer car stereo's user manual to learn how to select the AUX input source. This usually involves pressing a 'Source' or 'Mode' button until 'AUX' or 'External Input' is displayed.

Image: The dreeong 3.5mm AUX Input Cable, illustrating both the 3.5mm stereo jack and the multi-pin connector designed for Pioneer car stereos.
Operating
Once the cable is installed and your head unit is in AUX mode, follow these steps to play audio:
- Connect Audio Device: Plug the 3.5mm stereo jack into the headphone output or AUX output of your external audio device (e.g., smartphone, MP3 player, tablet).
- Select AUX Source: Ensure your Pioneer car stereo is set to the correct AUX input source.
- Adjust Volume: Start with the volume on your external audio device at a moderate level. Adjust the volume on your Pioneer car stereo to your desired listening level. You may need to fine-tune the volume on both devices for optimal sound quality.
- Play Audio: Begin playing audio from your connected external device. The sound should now be routed through your car's speaker system.
Maintenance
Proper care will extend the life of your AUX input cable:
- Keep Connectors Clean: Periodically inspect the connectors for dust or debris. Use a dry, soft cloth to gently clean them if necessary. Avoid using liquids or abrasive materials.
- Avoid Sharp Bends: Do not bend the cable sharply, especially near the connectors, as this can damage the internal wiring.
- Store Properly: When not in use, coil the cable loosely. Avoid tangling or knotting the cable.
- Protect from Extreme Conditions: Keep the cable away from extreme temperatures, direct sunlight, and moisture.

Image: The dreeong 3.5mm AUX Input Cable coiled for storage, demonstrating proper handling to prevent damage.
Troubleshooting
If you encounter issues, refer to the following troubleshooting tips:
- No Audio Output:
- Ensure the multi-pin connector is fully seated in the Pioneer head unit.
- Verify the 3.5mm jack is securely plugged into your audio device.
- Confirm the Pioneer head unit is set to the correct AUX input source.
- Check the volume levels on both your audio device and the car stereo.
- Test with a different audio device to rule out a device-specific issue.
- Poor Audio Quality (Static, Distortion, Low Volume):
- Ensure all connections are firm and free of debris.
- Adjust the volume levels on both devices. High volume on the source device can sometimes cause distortion if the head unit's input gain is too high.
- Inspect the cable for any visible damage, kinks, or frayed wires.
- Test with a different audio source device or a different 3.5mm cable (if available) to isolate the problem.
- Intermittent Audio:
- Check for loose connections at both the head unit and the audio device.
- Ensure the cable is not being moved or stressed, which could cause temporary disconnections.
Specifications
- Product Type: 3.5mm AUX Input Cable
- Connector 1: Multi-pin connector for Pioneer head units
- Connector 2: 3.5mm Male Stereo Audio Jack
- Compatibility: Pioneer DEH-P6600R, DEH-P9600MP, DEH-P3100UB, DEH-P4100SD
- Material: Durable PVC jacket, copper conductors
Warranty and Support
For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact the seller directly. Keep your purchase receipt as proof of purchase.