best way to build a warning buzzer for low oil pressure

[Lost in NC]

hey guys i have an '88 wrangler its tricked out with a 4.2 inline six ,bored out, big cam, 4bbl intake, header &c. it has the standard gauges and no idiot lights (unless they are burned out) i want to add a warning buzzer for low oil pressure and one for high temps. how would i go about figureing out how to regulate this with te stock sending units? would i have to modify the gauge with a sensor that is tripped by the needle on the gauge? . thanks.

ASP

[Tim Williams]

Switched +12 ~ (C) on switch ~ (NC) on switch to + of buzzer or lamp or both.
Other side of buzzer or lamp to ground.

When you first turn on the key the buzzer and lamp will sound. Once the motor starts the oil pressure switch will open. If you loose oil pressure the buzzer and lamp will let you know. This is as simple as it gets and works fine.

There are some places like boat suppliers that sell a buzzer with a lamp biult inside.

Hope this helps.

Tim

[Lost in NC]

hey thanks Tim ! i will try it out and let you know how it works . i figured a boat supply place would carry soemthing like that. im a documented merchant marine and have been working in then field for 6 yrs off and on. we had alarms on those big EMD's thanks again


ASP