You sould need to remove the idoit light sensor, which is an on/off tyoe sender and in that hole install a 2' pipe. Then onto this pipe you can install a Tee and on the tee, you would install the idiot light sender and the sender for your electric oil pressure gauge. You could also run a mechanical oil pressure gauge which has a small adaptor that would go into one of the openings of the tee and to that a small hose is attached which takes the oil to the gauge. I like the mechanical oil gauges as they give the pressure in real time. Just be shure that the little hose doesn't rub on anything sharp or it may spring a leak and make a mess. The pipe and tee can usually be found in any hardware store. I usually use brass, because it looks good. The threads are a fine pitch and you can bring in your old sending unit to find the correct parts. YOu can also just forget about the idiot light and put an oil gauge where the red oil light is. I prefer to have the light as an added safety device.
