Features: 1. High quality - the reversing camera filter is made of high-quality precision parts, plastic shell, solid structure, waterproof design, good wear resistance, high quality and long service life. 2. Perfect compatibility - 12V power relay 3. The filter rectifier can be used to provide stable 12V DC power for the rear camera. 4. Perfect German / American automobile series automobile rectifier. 5. Good performance - the on-board rear-view rectifier power filter can effectively provide stable 12V DC power for your rear camera, which helps to solve the problem of "screen swing" or "black screen" when reversing with the rear camera. 6. Professional camera rectifier with high performance and stable performance 7. Easy installation - input red line: reverse lamp positive pole; Input black line: reverse lamp negative pole; Output red line: camerapositive pole; Output black line: camera negative electrode simplifies installation steps without modification, cutting or drilling Note: please do not buy non German or American cars, because the current signals of different cars are different, and the use of this filter line is invalid due to the interference of non pulse signals! Connection method: red is connected to the positive pole of reversing lamp Black (connected to negative electrode) Blue, connected to the positive electrode of camera output Specifications: Name: reversing image rectifier Voltage: 12V Packaging includes: 1 * reversing image rectifier