Colour Coded Wiring For Cars Electrical wiring colour codes red which color colours ve dc 0v rail power electronics wikipedia info stack wiring - Red for +ve, black for 0v,which colour for -ve rail wiring - Red for +ve, black for 0v,which colour for -ve rail Check Details ← Car Alarm Remote Start Wiring Diagrams Wiring Colour Codes Uk → Share with friends Link copied