I got the wiring for the windshield wipers done. With no blades on the motor turns the blade posts, but once the blades are on, there is too much friction which causes the wiper motor cable to bind. It appears that there are two reasons for this. One, the motor is probably mounted about 1 to 2 inches too low, and there is a bigger than needed bend in the cable. Second, the fire wall is just a think sheet of aluminum, and isn't very rigid, in addition to that, the wiper motor mounding hardware isn't doing a good job of keeping the motor from rocking back and forth. The plan is to remount the wiper motor up in order to minimize the cable bend, and reinforce the motor mounting to minimize motor movement. Once that is done, I still have to drill a hole in the dash for the switch, currently it is just dangling.