I tried to follow Mark T's advice but was a bit concerned about getting the 9V too close to the board. So instead I broke out the multimeter and started testing continuity and voltage. It appears that while the meter is still the resting voltage is 0.6V when the meter begins to spin, the voltage drops. The faster it spins the closer to 0 it gets. I don't know if that is a helpful observation or not.
I did not use a pull up resistor to the 9V.