Re: On the subject of wires...

[Grimshaw Stuart <stuart.grimshaw@xxxxxxx>]

>Look for PIR sensors, squishy bits of carpets (pressure mats!), and
>magnetic sensors on doors, then trace them manually back.  Is nothing
>connected at the upstairs or under-stair end?  If the alarm is still
>connected, you could just short out wires upstairs and see which zone
is
>activated (after checking which wire is the 12V supply and avoiding
it!)
>
>There are none of these things in the house :-) The thing is a very old
>(1970's early 80's) homebrew, and it seems to mainly rely on magnetic
>door/window contacts. Though there might be a pad at the top of the
stairs.
>Although it's a very neat job, it's a crap system, no zones it's either
>silent, or not :-)
>
>There is a switch connected at one end, but the other end just
dissapears
>into a hole in the floor and then into the bundle of other wires...
>
>>What I was going to do was attatch a baterry across two cables
upstairs
>>and use a bulb across the various cables at the other end, but
seeing as
>>I don't know where the other cables are coming from, this doesn't
strike
>>me a being a really bright idea.
>
>Sounds like your best bet, unless some of them are connected to the
mains
>(which they shouldn't be if they're just normal 4-core, but you can
never
>be sure with a home-brew system!).
>
>I don't think the system has been in commisioon for some time...the
internal
>battery is dead flat, and the mains lead doesn't even have a plug on
:-)
>
>

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