Instructables

Step 2: Prepare and solder your interface wires

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I chose to put breadboarding leads on so I can experiment, however you can put on wires straight to the LEDs if you know your exact layout ahead of time. I cut the breadboard hookup wire in half so I was only killing 1 lead. Then I soldered each half on where the motor leads were. This will allow easy interfacing and prototyping. The Diagram below shows how the circuit works, note the position of the dial on the red servo tester. When centered (if the potentiometer is centered) neither light should come on. When turned one way, one color should turn on, when turned the other way the other color turns on. 
 
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