My '66 had a 12v pump but it went bad.
I found one from a Volvo. Yep thats right Volvo car screws right into the top of the washer bucket like it was made for it, then hooked the 12v from the wiper switch to it and wala! Wash the windshield not a problem... the pump motor is only about the size of a short roll of quarters (2"diameter x 3"tall) sitting on the top, and a hose with the screen goes down into the bottle and the outlet hose goes to your factory windshield wash hoses.
Good luck.
