Description:Item: Car Rear View Back Up Camera Stabilized 12V DC Power Relay Function: To supply the stabilized 12V DC power to ther rear camera, To solve the issue of the "screen cyclowarp" or "black screen" when using a rear camera reversing

Power Relay: The relay is connected in series between the normal fire and the power supply of the reversing camera, and the power supply of the reversing light is used to control the relay switch

Wiring method: Red: connect the positive pole of acc supply, Yellow: connect the positive pole of the reversing light supply, Blue: connect the positive pole of the camera power cable, Black: connect the negative pole of the camera power cableNotice: Please do not purchase if your car is non german Car Series,because there is different currents for the different car series, non pulsed signal interference, use this filter is invalid

and your camera wires are without that " wire (red) ", do not purchase this model too

Package Includes:1Pcs Car Rear View Back Up Camera Power RelayNote:Please allow slightly errors due to manual measurement and different monitors