The wiring center is an excellent wiring solution special for DVR application in vehicles. It contains multiple DC power outlets by taking the power input from the automobile, as well as the A/V connecting grid to be used to distribute the audio/video/signal inputs and outputs from variants audio/video sources. For one connecting device, the signal and power lines are integrated as single cable. It helps to reduce the time required by installer. Moreover, it provides clean and stable VDC to the devices which the automobile environment is lack of.