Rogue Diesel
New member
Needs some help guys. I am changing my gauge setup and I have been looking for a dual gauge to monitor fuel lift pressure and rail pressure. Spa Technique makes several gauges but not one for rail pressure. They make a dual gauge for fuel pressure/oil pressure, that I've heard of people converting the oil pressure to read rail pressure instead. And I've read about people using the dual "pressure" gauge and altering the wiring harness to read fuel lift & rail. I contacted Spa and they made a hand full of these dual gauges about 10 years ago but they have since stopped and the information was lost along the way. So has anyone converted one of these gauges or know how it's done?