So this is strange, I will try to keep it concise but still helpyou understand.

The rear windshield wiper will start fine, but after some seconds I hear a click and it stops moving. Then I will hear the click again and it continues moving. This will go for pretty much as long the car is on, and once I turn the car off, and back on, the windshield wiper will stay "off" wherever it last layed until I press the button back on... when it will continue to start-stop.

The key thing is, the clicking is not coming from the motor or the back of the car. It sounds like its a noise from the back left seat, maybe under the car, but it kinda sounds in the seat by the back left door.

Maybe there is some electrical component there that's clicking, or something?

Thanks for trying to help, the front wipers are working fine, so whatever the problem is isolated to the back.