This is the best way to convert any 3.55 7.64 6 volt wiper motor to 12 volt.
Direct replacement for the SWF 6 Volt original.
These will fit '65 only wiper motor (8/64-7/65 or anything with 3rd vin digit '5'),
the loaf shaped style, but will NOT fit 66-67 motors,
which is the cylinder type motor.