Troubleshooting

1. Apply power to the connections (Using a 9v battery or other safe controllable 12v source)
   
   
2. You should hear a clicking sound, this is the solenoid activating and moving.
   
   
3. With voltage applied air going into port 2 should exit port 1
   
   
4. Unplugging the power and air going into port 2 should exit port 3