100% new, stabilized 12 DC power filter rectifier for car rearview camera. Used to supply the stabilized 12V DC power to the rear camera. To solve the issue of the "screen cyclowarp" or "black screen" when using a rear camera reversing. Professional manufacturing, high characteristic and stable performance. Easy to install, input connect with reversing light positive and negative, output wire connect with camera positive and negative. Fitment: For Germany/American Car Series Installation Method: Input Red Wire: Reversing Light Positive Pole Input Black Wire: Reversing Light Negative Pole Output Red Wire: Camera Positive Pole Output Black Wire: Camera Negative Pole size:4.8 x 2.6 x 1.5cm/1.9 x 1.0 x 0.6in Material:plastic colour:black Package Contents: 4 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.