This gauge panel comes with a low oil pressure warning light. We've used an oil light in our own car forever. Last year it saved us a $50,000 engine at Williams Grove. Lance saw the light come on, looked down at the oil pressure gauge, saw no oil pressure, and shut it right down. Without the light, he would not have seen the no oil pressure while racing. Also comes with a weatherproof sealed ignition switch. Complete gauge panel is totally wired and includes water temp gauge, oil pressure gauge, aluminum tee fitting for oil line, oil light, oil light switch, 9 volt battery and holder, and dzus buttons and springs.