I'm wiring in an Autometer Tri-Alert annunciator. It is a small box that works with Autometer elec gauges. You can set three gauges to set off warning lights and/or buzzers. You can have one light or three. You set each gauge individually and whether you want it to activate on high or low.
No time to look at gauges while hammering it around a road race course but a big red light and/or buzzer will make you aware of a problem before it becomes one.
Roscoe