[Professional Quality] - The relay filter rectifier is made of high precision components with a plastic shell, sturdy construction, waterproof design, good abrasion resistance, for a long service life. [Easy to Use] - Easy to install, no modification required. Just read the wire configuration: Red wire input: reverse light positive pole / Black wire input: reverse light negative pole / Red wire output: camera positive pole / Black wire output: camera negative pole. [Good Performance] - The car rear view rectifier can effectively supply 12V DC 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 can be used to supply 12V DC stabilized power to the rear view camera. Suitable for 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 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.