I ordered a haynes manual but have not recieved it yet. I figured I would post the question in the mean time. My car is an 87 Turbo T bone stock. Mounted on the passenger side valve cover there is a electrical connector that goes to a two port vaccume manifold. On my car one prong has a line on it the other does not, its just an open port. I imagine the other should have something there. Can any one shed some light on this? I can take a pic, but Im not smart enough to figure out how to post it.