GM Single Contact Light Socket 1973+ Email 2-Wire GM Single Contact Back-Up, Corner, Park, Stop, Tail and Turn Light Socket Part #: 2589F Quantity Price ea. 1 + $13.97 4 + $11.87 15 + $9.78 13.97 Back to: GM Chassis Connectors Ask a question about this product Back-up, Cornering and Turn Signal Single Contact Socket Ford and GM Side Marker Socket Assembly 1968+ Description 2-Wire GM Single Contact Back-Up, Corner, Park, Stop, Tail and Turn Light Socket. From 1973 thru 1980. Replaces GM #8904437, #8909518, IHC #571721C91 and AC-Delco LS2. Uses Bulb #1156.