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- Xref: sparky rec.audio.car:4924 alt.locksmithing:2018 alt.tasteless:12665
- Path: sparky!uunet!sun-barr!ames!agate!usenet.ins.cwru.edu!po.CWRU.edu!kmr4
- From: kmr4@po.CWRU.edu (Keith M. Ryan)
- Newsgroups: rec.audio.car,alt.locksmithing,alt.tasteless
- Subject: Re: Car alarms
- Date: Wed, 18 Nov 1992 14:20:19 GMT
- Organization: Case Western Reserve University
- Lines: 71
- Message-ID: <kmr4.257.722096419@po.CWRU.edu>
- References: <1992Nov16.011002.9976@cis.ohio-state.edu> <1992Nov16.022618.130@news.unomaha.edu> <1992Nov16.052253.6048@u.washington.edu> <1992Nov16.205000.18486@wam.umd.edu> <49700@shamash.cdc.com>
- NNTP-Posting-Host: b64746.student.cwru.edu
-
- In article <49700@shamash.cdc.com> gmh@cloud.awd.cdc.com (Gregory M. Heideman) writes:
- >It can't die soon enough for me. All this stuff is boring.
- >
- >Cheap, poorly installed (junk) alarms give _MANY_ more falses than good, well
- >installed alarms. The world is full of cheapskates. 'nuf said!
-
- Inexpensive alarms do not necessarly have many false alarms. I agree
- with the poorly installed alarms. If the alarm is falsing on a regular
- basis, then either: the installation was incorrect or it is defective. Many
- people think the correct sensitivity on the shock alarms is "if the thief
- breathes on it...". Let me tell you a story about me and an inexpensive
- alarm.
-
- My first alarm was a Crime Stopper Pager (4901?), for $110 from
- crutchfield. I bought this particular alarm, because the car was
- ridiculously easy to break into. Yet, I had about $1600 in Alpine and BA in
- it, but was low on cash. The local mall where I worked had a notorious
- record of car theft. The pager was better than any siren, and with the
- optional antenea, the range of the pager was greater than 2 miles. While
- this particular one did not have a back up battery, the car had two ground
- staps- the normal one, and a very short ( 6" ) cable from the battery to the
- fender. This one could not be cut without opening the hood, and lifting out
- the battery ( strapped down). While if you cut the main engine block ground,
- it was not wise to start the car, the alarm still worked fine. It had the
- full assortment of the usual, plus some modifications, Dual door pin
- switches ( you might disable one, but I had one positive pulse, and one
- ground! The alarm has both kinds of door pins, for the different types of
- cars. I said, shoot, I could use both! All I need it to modify it a bit)
- Glass breakage sensors, Door opening sensors, twin trunk and hood pin
- switches, and a motion detector. No fancy stuff as power lock opener,
- ultrasonic detectors, etc.
-
- Since this was a passive alarm, ( insurance reasons ) I modified
- the "kill switch". Normally, to disarm it, you just have to supply power to
- the ignition circuitry ( ie turn the key, but hotwiring it would also disarm
- it-bad) So, I mounted a seperate key lock, under the dash, but out of easy
- sight. The "brain" was located deep inside the dash, and the wires were
- looped inside the car's wiring, to disguise them. So, if they ripped open
- the fuse box, etc, they could not disarm it.
-
- It saved my system on three occasions, twice they had cut the ground
- strap, and foolishly thought it was disabled. One time, the thief ( a local
- punk who knew I had a sound system ) thought this disabled the system.
- ( oh yea, I had it wired so that a rocker switch in the glove
- compartment determined if cutting the main ground disabled the siren. That
- is, there were two wires to the siren, one was closely strapped along the
- ground line. The switch determined which line was used. That way, at home,
- the thief will think he disabled the system, allowing me time to catch him,
- call the cops, etc )
-
- Late one night, ~ 3 am, my pager went off, and I quickly put my
- shoes on, called 911 then grabbed the family 12 ga. I quietly went out the
- back door, and came around. He was lying on the seat, trying to work the
- Alpine head unit out. I shone my maglight on him, and told him to freeze. I
- think he lost his bowels. :-) Doing hard time, doing hard time. They got him
- on grand theft auto.
-
- |:-0
-
- >:-/
-
- :-|
-
- :-}
-
- :-)
-
-
- and virtually no falses
- even though the local cat liked to sleep on my hood when I came home late at
- night.
-