Hello Trepidation. Without a picture or schematic of what you have done this will be a little tougher.
How are you powering your solenoid? The Picoboo Jr. Will work for this set up. You can power the solenoid independently or use power from the controller with a jumper wire provided you have a 12 volt dc valve. Frightprops has a manual online for this controllers wiring options. If the manual does not do the trick come back and we will get you figured out. Here is the link to the web page. http://www.frightprops.com/faq/index...=99&artlang=en