In a message dated 3/17/2006 10:14:02 AM Central Standard Time,
tr3driver@comcast.net writes:
> At least it has a real sending unit. Some cars, eg Mazda Miata/MX-5, have
> only
> a switch, connected to a gauge on the dash.
>
Why not? Most people don't know good oil pressure from bad. A switch and a
resistor and the gauge reads midscale when oil pressure is present and zero
when there is no pressure. Having a gauge that varies only leads to unwanted
warranty calls.
Dave
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