My electronic 4 wheel drive stopped working after I was working on my distributor. I believe it has to do with the fact that when I was installing the vacuum lines as I was putting everything back together, one of the hard plastic vacuum lines pulled out of "something' that I believe was the "fat"(>1" dia) harness cable bundle that runs across the engine compartment low on the firewall. This is the hard vacuum line that comes off the manifold fitting at an angle close to the intake itself. I see the hard vacuum line that controls the HVAC and it is installed into the upper cable harness (smaller n diameter) and the HVAC works fine. I believe but am not sure, that the hard line that pulled free was going into the fat harness and may go into a "T' fitting that runs both directions inside the harness. The car is very old, everything is brittle, it is a bitch to get down there into the harness, even with the distributor removed. Before I start undoing this very large harness to see inside, I am hoping someone has some close up pictures of the vacuum lines that go int the harness and even better can confirm or deny that there is a t fitting buried in the harness. At least then I will be certain I am digging into the correct area.