P.9Slide joystick controller into armrestP.10 Secure joystick controller knob 6. Connect the controller wire harness to the CPU wire harness. Take care the line up the pins properly as arrow tip indicate, so that they do not get bent, broken or damaged. Note Make sure connector pins white arrow to white arrow P.11 Installing and removing the battery Installing the battery Just put the battery to battery shell on both side of wheelchair , No need to distinguish left and right , both are the same. 11