Mystery GT Brand Car Alarm - What Is It/How Does It Operate?

Mystery GT Brand Car Alarm - What Is It/How Does It Operate?

Author
Discussion

InitialDave

Original Poster:

9,755 posts

92 months

Thursday 4th May 2017
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I have a car which has an alarm already fitted, but I don't know what it is or what the functions are/how to operate it. The fob/remote looks like this:



2 buttons, green LED. It's clearly a GT brand unit, and from what I can see, the fob model is either a "G127" or an "82 TXC". I replaced the battery (an A23/MN21 12 volt one), and it seems to function. Push a button and the LED illuminates, and the car clearly reacts to it with the indicators flashing and the dash LED stopping. I haven't poked about with it too much, as currently the car doesn't protest over being unlocked with the key and started up, and I'd rather not find myself with a wailing alarm or immobilised car if I get it wrong.

So, does anyone know if there's a "generic" way this brand works in terms of what button does what? Or a manual available online that might help? I found a few related installation guides, but nothing that seems particularly useful.

Any way I can determine exactly what model it is other than digging ito the dashboard and finding where they've squirrelled it away?

gmaz

3,783 posts

183 months

Friday 5th May 2017
quotequote all
I found this page with similar models but it is in Russian. If you open it using Chrome, it autotranslates

http://www.autoelectric.ru/autoalarm/gt/m-gt.html


InitialDave

Original Poster:

9,755 posts

92 months

Friday 5th May 2017
quotequote all
Aha, I think I spotted that site earlier, but didn't look at it because I assumed it wouldn't be much help to me as it was Russian. Hopefully something there that'll help, thanks.

InitialDave

Original Poster:

9,755 posts

92 months

Friday 5th May 2017
quotequote all
Update: Found the alarm unit by tracing some "aftermarket-looking" wiring from the footwell (it was under the carpet beneath the drivers' seat).

It's a GT109 model.

InitialDave

Original Poster:

9,755 posts

92 months

Tuesday 9th May 2017
quotequote all
To close this out (mainly for anyone doing a search in the future, always frustrating if there's an old thread that could help you but with no rear answer):

I sent a message to GT Alarm in Italy, and they replied with a copy of the English-language fitting instructions and wiring diagram for this model. That should allow me to work out what I'm doing with it as necessary.

KevMcK

3 posts

56 months

Thursday 22nd July 2021
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II'm a bit late with this reply but am having problems with my 80 Cabrio and found this diagram for a GT121 alarm system. in English.http://www.autoelectric.ru/autoalarm/gt/121/gt121m.htm

Spare tyre

6,528 posts

103 months

Saturday 7th August 2021
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Not any help but the local Citroen dealer fitted gt auto alarms in the 90s

Had lock button and a panic button

TotaalneAmber122

1 posts

2 months

Tuesday 9th November 2021
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The "A" is for lock/unlock

The arrow is for panic