[MrForbes]

They need power, too. But yeah, they just need a pwm signal to make them work.

If you don't have speed controllers already, and you don't need the high current capacity of the Jags/Victors, you might consider the smaller (lower current) controllers that Banebots sells. They are reversible. They do require you to send them a zero signal before they'll start, which can be either a nice safety feature, or a pain.