Hello. I've got a 12v Isuzu truck wiper motor to use in my project. It has 4 wires (blue, green, black, white), and then by experimentation, I found that white is for common, blue is for high speed and black for low speed.
I wanted it to go in both directions, but then I tried exchanging the leads (I use black for + and white for -), but then it didn't go in the reverse direction. I've checked all that I can in Google and I can't simply find the answer, so I asked you guys. How am I supposed to reverse the direction of the movement of the wiper motor?