Hi Stefan,

> Why don't you just disconnect the battery when the car is standing still 
> in the field? :-)

Or let it go flat ;-)


> Why the hell do i need a sensor that shows 
> me if the door is open? If it is open i see it or hear it. Just useless 
> inventions by the automobile industry!

Actually, I think they invented it for good economic reasons. I think it's got 
to the point where it's cheaper to have two power wires plus two signal wires 
going from the dashboard to the back of the car, rather than the traditional 
wiring loom for tail lights, brake lights, indicators, and maybe rear screen 
heater, wiper and washer. I would guess the door sensors (a) turn on the 
interior light and (b) maybe sound some warning if you drive off with the door 
ajar.

73,
Chris

-----------------------
Dr Chris Trayner
School of Electronic & Electrical Engineering,
The University of Leeds,
Leeds LS2 9JT, United Kingdom
Tel: +44 113 34 32053
Fax: +44 113 34 32032