Hi, I have a loose 4 pin wire slot near the antenna of my car.I have checked this with a manual but am not to sure what it is,and the other side of the wiring near passenger door has been disconnected.They tell me it could be the BULB TESTER found in the boot of the car near lights. The colors of the wires are: Yellow/black Yellow/brown Blue/black Blue/brown,....anyone know what this can be? Its spinning me out here and i cant find it in the manual so any help or opinion would be appreciated.