This auction is for a 65-66 Impala AC fan switch connector with a section of the wiring. We removed this connector from a 65 Impala we are parting out. It will fit other GM model cars. It is 3 cavities at the bottom and is 1 1/4" across and has 2 cavities and is 13/16" across and 1 cavity and 7/16" across. This harness has 4 of the 7 cavities used. Replace your badly corroded or broken plug with this nice original with pigtail of wire with the original GM color coded wires.