Good Morning!

When I bought my 2000 V70R, it had two gauges on the steering colum. One for Boost Pressure and the other for Oil Pressure. The Oil Pressure Gauge is not connected but I do have the small harness that connects to the gauge an also have the sending unit that reads the pressure. I do not, however, have the instruction manual to properly hook everything up and God knows I don't know how to do it off the top of my head. Has anyone else installed the Perrin Evo model Oil Pressure Gauge and can explain to me how to do it?

Thank you in advance!