Did you try
this thread? It is mostly engine vacuum controls, but has a few for the locking system.
As for Fastlane, Phil can usually get parts that may not be listed on the website if you call.
Tommorow I will go out and take a picture of my cars lines in that area, a PO might have messed with them somewhat. The main big black line should have 2 connections on it, one gos to the transmission/egr, the other supplys the rest of the cars vac systems. This is an easy section and want to make sure is correct as a base for further diagnoses.