On Fri, 04 Jul 2008 06:27:42 GMT, "Graham" wrote:

Does anyone know if these gauges display miles per gallon (or litres per km)
or just miles travelled and gallons consumed?

Do they need any special interface to work with standard GPS's like a
Raytheon chart plotter?

Thanks, Graham

Check this - don't know if it applies to yours.
About halfway down is pic.

http://www.thehulltruth.com/forums/t...tart=1&posts=1

--Vic