I have used the search, but all the available links have as of yet not been answered. I have a 97 theft-loc delco with scv installed in my 94 caprice. What do I need to wire into in order to get the scv to work? Since the original harness did not have scv, and I know there is an empty slot or two in the harness, I imagine that I need to add a wire to the harness, and run it to ... perhaps the speedometer? The wiring diagram I looked up at install doc did not have the scv, but also shows the empty slots in the harness. My impression is that this diagram is therefore out-dated.