Brendan;
Mine works fine. I am not thrilled with the extra heater switch/Rehostat but it works. You can get the same switch at Fleet Farm too. On your side of the water, try Tractor Supply. There is no return on the switch so you have to play with it to get the wiper out of the windshield when you turn it off.
I had no problems putting it in as I remember. It semed to me that the speed of the motor was a little fast and the extra switch was needed to slow it down.
Make sure you get the switch bolted down so it doesn't move. It gets pretty hot. I ran a line from my fuse block to the switch and then to the wiper motor, grounding to the frame. The wires run from the switch to the windshield post. You can snake them right through it and it comes out in the overhead area by the wiper spot. I would replace the rubber grommet that goes through to the outside as well, maybe even use some silicon to seal it up.
All in all it is pretty painless. Mounting the switch was the hardest part.
