Well with the key on I have ground and hot on the wires at the solenoid. I was plugging and unplugging the connector a bunch testing the leads. I don't remember hearing it click when I plugged it up. Is the solenoid normally open? And when you turn the key on it closes the system? Then when it needs to vent the driver pulls the ground and the solenoid opens to vent the evap? I am just guessing at how the circuit works. If anyone knows feel free to chime in. I am sure I will not be the last guy to have this code.