Reproduction of the original air conditioning wiring harness designed for use with 1963 Chevrolet Impala Bel Air and Biscayne models built prior to 3/22/1963. Each harness is manufactured according to the original General Motors specifications and schematics offering an authentic and fully functional replication of the original harness. Upon arrival the harness is fully assembled taped and ready to install. Air conditioner wiring is often a separate add-on item that runs in parallel with the remainder of the chassis harness. In most situations the AC harness is a single piece with connections for the compressor and blower motor. Some vehicles require a two-piece AC harness so please verify your project selections before purchasing. Connections vary significantly from vehicle to vehicle so we recommend using a factory assembly manual to help with this installation. Includes correct color wiring OE style connectors terminals and all necessary plugs to replace the original old or missing wiring. NOTE: For use with factory original air conditioning systems only.