57 - 65 Chevy Wiring Diagrams Wiring diagrams for 1957-1965 Chevrolet These diagrams are from the 1965 edition of the 'National Automotive Service' wiring diagrams book. This book contains the wiring diagrams for all American cars from 57-65. The diagrams below have been scanned so as to ensure maximum detail (big files!). 2003 Chevy Impala Wiring Diagram | Free Wiring Diagram Collection of 2003 chevy impala wiring diagram. A wiring diagram is a streamlined standard pictorial representation of an electrical circuit. It reveals the parts of the circuit as simplified shapes, as well as the power and also signal connections between the gadgets. Reverse Light Wiring Diagram | Impala Forums I'm trying to attach a backup camera to my 2006 Impala. What wires in the attached picture are positive and ground? Reverse Light Wiring Diagram. Jump to Latest Follow I discovered some time back that the reverse lights on my 2010 do not come on unless the engine is running.