Size: 4.8cm x 2.6cm x 1.5cm. The 12v DC power relay capacitor filter is made of plastic, durable enough for long term use. This product stops the screen from flickering when the engine is running. Fixs the interference issue with the reverse camera. Saved the hassle of removing the camera and all the cabling from the car. Great for fixing the rear camera flickering issue or camera showing as no video. This product eliminates lines and interference on reversing LCD display. The car rear view camera rectifier filter supplies 12V DC stabilized power to the rear view camera, which helps to solve the problem of flickering or black screen when using the reversing camera. It is a professional straightener with high characteristics and stable performance. Great Compatibility --- The car reverse camera rectifier is very suitable for various German cars and American cars, such as , compatible for VW Volkswagen, compatible for Skoda, compatible for Audi, compatible for BMW, compatible for Mercedes Benz, and more German/ American car brands. Easy to Install & Use --- Red input lead: reverse light positive pole. Black input lead: reverse light negative pole. Red output cable: positive pole of the camera. Black output cable: negative pole of the camera.