The Thruster Assembly
Step 2

1. Strip 1/4" from both sides of the loose black wire. Connect the loose black wire to the back of the black alligator clip (DO NOT SOLDER).
2. Strip 1/4" from both sides of loose red wire. Connect the loose red wire to the back of the red alligator clip (DO NOT SOLDER).
3. Locate the positive (+) brass terminal on the motor, mark the terminal with a red marker (if available), and connect the exposed end of the red (+) wire to the positive (+) motor terminal.
4. Mark the negative (-) terminal of the motor with a black marker, and connect the exposed end of the black wire (-) to the negative (-) motor terminal.
5. Connect the alligator clips to the corresponding battery terminals and ensure the motor is in good working order. The shaft should spin counter-clockwise.
6. Repeat steps 3 through 5 with the other 2 motors. If any motor is not working ask your instructor for a replacement.

#############TROUBLE SHOOTING###############

IF you cannot see the + and - signs near the terminals of the motors,

THEN follow this procedure to find the + and - motor terminals:

• put a small piece of tape on the shaft of the motor, so you can easily see it spin.
• Connect the black wire to one terminal and the red wire to the other, and connect the alligator clips to the proper battery terminals (red on +, black on -).
• Observe the rotation direction of the motor.
• If the motor shaft turns counter-clockwise, then you have chosen the correct terminals: black wire on negative (-) and red wire on positive (+).
• If the motor shaft turns clockwise, then the wires are reversed. Switch them around and make sure the motor turns counter-clockwise.
• Mark at least one motor terminal with the correct color(s): red (+) and black (-).

***MOTORS SHOULD SPIN COUNTER-CLOCKWISE***

WARNING, TO AVOID ELECTRIC SHOCK AND SEVERE BURNS:

• DO NOT touch exposed wires onto the battery.
• DO NOT simultaneously touch both battery terminals with your hands, or ANY type of metal.