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

[InitialDave]

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]

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]

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]

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]

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]

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]

Not any help but the local Citroen dealer fitted gt auto alarms in the 90s

Had lock button and a panic button

[TotaalneAmber122]

The "A" is for lock/unlock

The arrow is for panic

[Junior1981]

I see a lot of people said

The "A" is for lock/unlock

The arrow is for panic.

I have the same set in my Suzuki
and the arrow is lock/Unlock
and the A is a kind of double lock.
I have also read the manual and in
the manual also wrote the same as
what i said it is. This remote is only
for the central locking system nothing
else. So I'm curious what the panic button
should have as a function according to those
who said it is a panic button

[tommysport]

InitialDave said:

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?

Hi, random I know but I've just bought a mk1 mx5 which seems to have this exact same fob/button immobiliser set up.

Did you resolve your issues in the end? I think I will try and get some help to remove it and hope the wiring isn't too bad.

Thanks!

[InitialDave]

Yes, it's a while back, so I don't remember the specifics, but you can see in my other replies I worked out what it was.

I ended up leaving it in situ as it never caused me any bother.

[tommysport]

InitialDave said:

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.

Ah great stuff, thanks. I don't suppose you still have the above on an email? It's disappeared from the post?

Happy for you to PM me or whatever is easiest... I can only see the Russian ones. Hmmm!

Thanks

[InitialDave]

tommysport said:

Ah great stuff, thanks. I don't suppose you still have the above on an email? It's disappeared from the post?

Happy for you to PM me or whatever is easiest... I can only see the Russian ones. Hmmm!

Thanks

My email address is set up incorrectly on here (really should change that), but I've just PM'd you what should be a link to download the pdf I was sent, if you could let me know if that works?
Have put it on Google drive and made it shareable, will take it back down afterwards if you can confirm you were able to save a copy.

[tommysport]

InitialDave said:

My email address is set up incorrectly on here (really should change that), but I've just PM'd you what should be a link to download the pdf I was sent, if you could let me know if that works?
Have put it on Google drive and made it shareable, will take it back down afterwards if you can confirm you were able to save a copy.

Perfect, yes I recieved it and managed to download it, super thanks so much! Will send to my auto electrician and hope for the best!