I just bought a Gn that was never put completely back together after the previous owner had the engine rebuilt. So while in the process of getting everything back together I came across a problem. It has a GNX style gauge cluster in it and I have a question on hooking up the oil pressure gauge. The oil feed block was missing and so was the original oil pressure switch, and I'm guessing the vdo oil sending unit? I only have one plug off the original wiring harness for the factory oil switch but it looks like it has a press on tab that you can add a spade connector to on one of the 3 factory wires that goes to the vdo sender? Do any of you guys have your oil pressure gauge hooked up like that? if anyone can help I appreciate it.