12HT VSV shut off. Trying to figure out how the electrical part of this works. I put power across the terminals and don’t hear any clicking noise. I tested a different VSV valve I have the same way and can hear it clicking and the test lamp dimly lights up. I am assuming that the VSV shut off is normally closed and it takes power to move to open-open the vacuum port to move the shut off butterfly to open/on. Thanks
