[Professional Quality] - The relay filter rectifier is made of high precision components with a plastic shell, sturdy construction, waterproof design, good abrasion resistance, and high quality for a long service life. [Easy to Use] - Easy to install, no modification required. Just read the wire configuration: red wire input connects to reverse light positive pole, black wire input connects to reverse light negative pole, red wire output connects to camera positive pole, black wire output connects to camera negative pole. [Good Performance] - The car rear view rectifier can effectively supply 12V stabilized power to the rear view camera, helping to solve the "cyclowarp screen" or "black screen" problem when using a rear reversing camera. Professional camera rectifier with high characteristics and stable performance. [Check Compatibility First] - The 12V power relay filter rectifier supplies 12V stabilized power to the rear view camera. Suitable for use with German and American car series. Size: 4.8 x 2.6 x 1.5cm / 1.9 x 1.0 x 0.6inch. Type: Cables Adapters Voltage: 12V Color: Black + Red Material: Plastic Size: 48 x 16 x 26mm Package Contents: 3 x Rectifier Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement allows an error of +/- 1-3cm.