The oil pressure gauge wiring is not connected. I know one end goes to the switch. The other end of the wiring has 2 connecters , do these connecters plug into the back of the oil pressure gauge or is there somewhere in between the switch and the gauge where they connect?

If it plugs into the oil pressure gauge itself do you have to take the instrument bezel off and remove the gauge cluster to plug these 2 leads in?   Thanks Phil