Early TPI Help Please

I have a TPI setup on my 383 that I've pretty much built from pieces, but I have a problem with one of the parts. On the right side valve cover there is a connector that goes to a small aluminum tube (this tube is bolted to the lower intake) and appears to go to one of the ports on the throttle body. I'm assuming the middle one, because I have an incredible vacuum leak there that if I plug it the engine will stall. I *believe* the TPI is from an '85 or '86, but I'm not sure. (There is a cold start injector, but I've converted to Speed Density so that is not used.) Anyone have this on their cars, and if so can you tke some pics for me so I know the routing? Thanks in advance!!