I know that there is plenty of information on the Honda wiper upgrade for 240s but I am having a difficult time figuring out the wiring on my 78 280. I have tried wiring it with and without the "parking" relay and cannot get it to work either way. If anyone has information on how to wire this in I would greatly appreciate it. Also, I have attached an album of the pictures of the wiring harness and wiper motor. Album.