Heater, Defrost SVCE
680/685-2 Use From Serial #1810000 to #2271174.
          Prior to Serial #1810000, See 7016004.
          Starting With #2271174 See 7022118.
690/695-2 Use From Serial #1810000 to #2269189
          Prior to Serial #1810000, See 7016004.
          Starting With #2269189 See 7022118.