Features: Fashionable, light weight Safe and convenient to use Applicable car model: Universal Installation Precautions: 1. Please read the instructions carefully before installing 2. The positive and negative pole reversed is prohibited, wrong connection will cause damage to the product quality, which is not within the scope of protection. 3. Professional Install Is Highly Recommended 4. Removal DVD navigation 5. The correct connection cable, DVD navigation steering control line (KEY 1 and KEY2) 6. The receiver cable connection methods: White 1 1 KEY steering wheel control line Gray 2 1 KEY steering wheel control line Red ACC cable car keys Black negative ground connection 7. Into the DVD navigation system, steering wheel control interface 8. Hold the button, then click on the screen function key learning settings Specifications: Item Name: Car Intelligent Steering Wheel Controller Model: T-3 Color: Black Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 2 x Steering Wheel Control 1 x Top Box 1 x Manual