Thank you Joe. I need to hook the heater valve to one of the other 2 lines with out a T. Then put the other line into the ball and find a vacuum source for the big hole on the ball. The only situation doing it this way could be the best and air conditioning could be wrong. That was my concern to day that those could be going to the wrong place. This car is timed using manifold vacuum. This is a Holley Street Avenger, I think I'll try the port on the back of the carburetor. Again I appreciate the help from Neil, JJ and Joe in this situation.