electric wiper install in a stepdown

Ok, here it goes. The system utilizes a single cable "pulsated" through a tube by an electric motor. The cable is coiled and passes under and over two sprockets, each driving the blade from the center out as in the factory setup. It self centers when you shut it off. You will have to sacrifice the factory defroster vents and fabricate replacements because the metal around each vent must be cut to permit installation of the sprocket. Once installed, some of the metal can be bent back to its original position, but the defroster vent will no longer fit. To install the sprockets through the wiper tower, the existing hole in the wiper tower must be drilled 3/8". I removed all the ancillary stuff from the tower so that only the chrome piece was left. Once drilled, the sprocket shaft and its sleeve easily mount in the tower. It's held in place by a nut on the sleeve, the original tower bracket, and a knurled cap that has a set screw. All of the exposed parts on the upper dash are covered by the windshield moldings. I made a few additional brackets to provide extra stiffness (shown in 3rd pic.). I installed the motor below heater unit, and the original heater core can still be used. I haven't tackled the heater motor issue yet but if necessary I'm sure I can find a smaller blower motor. I was able to adapt the Hudson knob to the supplied controller, and it even indents to activate the washer (another issue, not attempted here). A word of caution. The instructions for installing this unit are poor, almost pidgeon english. Study the way things fit together before cutting.