[Walt Fricke]

Here is another idea - you can purchase an oil pressure sender which has both the idiot light switch and the pressure sender combined. That you just screw into where the idiot light switch is on the flywheel end of the engine.

Just be sure that you get a sender which matches your gauge. If the gauge is 10 bar or 150 psi, get a 10 bar/150 psi sender. If it is a 5 bar gauge (you haven't told us the vintage of the car), you need a 5 bar/75 psi sender.