wiper motor
Yep, most likely.
The parts related to the wiper motor working are;
Multi-switch (aka the turn signal wand) - if allis working there ok then this is propably not it
Govener (found under dash behind left knee panel) you can not get to it without pulling panel. (be gentle pulling panel clips, they brake easily)
Usually its the wiper motor itself and its a medium effort change.
You do need to pull the wiper blands and hosing cover to pull the motor. (inless you have the engine out or upper IC manifold)
If you decide to change, buy new one