Just to the left of the oil filter. Mine barely shows above nothing at idle when the engine is warm. When running around 2500 RPM it covers the little handle on the oil can filler. Toyotas seem to be notorious for having innacurate oil pressure gauges. My mini always showed about the same as above and had it checked at a shop and actual pressure was fine. The manual says to remove the wire from the sender and ground it thru a 3.4W bulband the gauge should read "High". Resistance across the gauge should be 25 ohms. No resistance specs listed on the sending unit.