Tim, you really should actually read the manual. It's true that having the light "up" is an issue but it's got nothing to do with the intrusion sensor. -poke-TimMullen said:Read the section about the alarm system. It should also be mentioned when they talk about the interior light (as in keep it in the down position or the alarm won't function properly).
Here is what it says about the interior light and how it affects the alarm:
• Lens rocked upwards; lamp is switched off.
NOTICE: Use this position only temporarily as required. Arming
the security alarm system with the lamp switched off may
exclude the doors from activating the alarm.
And cause the constant beep warning you that a sensor is already tripped. Evidently the alarm uses the same circuit for door opening that the light uses.
This is what the Elise manual says about the intrusion sensor:
A microwave sensor is mounted behind the cabin rear
bulkhead trim panel, and is able to detect substantial physical
movement within the cockpit, and trigger the alarm. Microwave
transmissions are blocked by metal objects, so it is important
not to shield the signal by placing such items on the bulkhead
If desired, the alarm may be armed without the intrusion
sensor or battery interruption circuits being active by arming the
system in the usual way with the transmitter larger button, and
within 20 seconds, pressing the smaller button twice.
Finally, here is the mention of that sensor in the Cobra manual (p. 13)
When the system is armed, a microwave emission from the hyperfrequency module hidden in the passenger compartment will
ensure the volumetric protection of the vehicle.
For use on convertible vehicles, the volumetric protection will be stable even with the soft top, windows or sunroof left open.