"Idiot light" vs. Oil Pressure Gauge

I had just the oil light on Vixen for the longest time. I got curious just what kind of oil pressure she had, so I plumbed in a manual gauge and mounted it under the hood. She idles on the relief valve cold at about 75PSI. Hot she idles about 50 and as soon as the throttle is blipped, you can see the needle stop like a STONE on the relief valve at about 75. I'm like you. I don't like the clutter inside so I mounted mine under the hood. If the light works, use it and don't worry about it.