[mhall]

The image is a double action solenoid, but it does not show that there are two wires to each side. '-' and 'signal' are marked on the digital breakout, so just follow what it says and wire '-' to black and 'signal' to red on the solenoids. A double action solenoid will require two sets of pins. For ease of connection, you can cut one pin off of a PWM and it fits fine on the breakout.