The rest of the batteries were put on some aluminum angles located above the motor. The DC/DC converter hangs on those angles too. (The DC/DC converter takes the 96 volts used for traction and converts it to 13 volts to run the lights & such. It is the '12 volt' battery for the bike). I just wired the output of the converter to the Main fuse on the fuse box.
The motorcycle's twist grip moves a 0 - 5000 ohm pot-box that tells the controller how fast you want to go & how hard you want to accelerate. It behaves just like a normal throttle.