Solenoid DC Jacks
Four DC jacks are used to connect the solenoids. These will be panel mounted to the enclosure. JST-PH female cables are soldered to each DC jack. The cables are approximately 30mm in length (1.2in).
DC Jack Polarity
Reference the photo for the correct polarity. The terminal with the large contact is VCC / voltage. The middle pin is not used. The remaining pin is ground.