I ordered adapters for connecting the manifold and fuel pressure sensors to their hoses. The threads on the sensors are male 1/8 NPT and the barbed connectors I have are 1/8 BSP threads. Manifold sensor is a 6mm hose connection and the fuel pressure is a 8mm hose connection. I tested the manifold, fuel, and oil pressure sensors by temporarily connecting them to the #1 engine plug and they all indicated correctly on the G3X.