"Power up the Water Whee" is an objective in the mission Fun, Sun, and Guns in Sir Hammerlock vs. The Son of Crawmerax.
Walkthrough[edit]
Head on back up the slope to the Northwest from where you were fighting the Pirates. Crazy Earl will have opened the gate which allows you access to the controls of the Waterwheel. Go to the switchbox to the right of the gate to Waterwheel. Use it to open the gate.
Once inside head slightly to the left. There is another switch box. Use it to start aligning the wheel:
Head over to the right next. Go up the ramp. At the top you will see 2 switches. Throw them in any order to continue with the powering up process.
Turn to the Southwest next. There is one more switch to throw. Just head over to it on its ledge above the ramp. Interact with it and the Waterwheel will start to power everything in the area.
