I’m having rear wiper motor issues. It stoped working the other day and then with my car off and looked it started going for about 30 seconds or more. The the next day it was working again but it still has issued because when I put the car into reverse it started working but then stopped when I put my car into drive. I don’t have any other electrical issue with the car. I’m not sure if it’s the wiper motor I need to replace or is it the wiring somewhere I can’t see.