Mon Oct 31, 2011 7:45 pm

Hooked
2008 GTS 250
Joined: 19 Aug 2011
Posts: 167
Location: Dolan Springs, AZ
 
Hooked
2008 GTS 250
Joined: 19 Aug 2011
Posts: 167
Location: Dolan Springs, AZ
Mon Oct 31, 2011 7:45 pm linkquote
I added the relay to cut out the buzzer at stop lights. I used the small terminal Strip and wired it like the drawing Cincinnati John posted except I switched the ground side of the buzzer.


I used a tap at the rear brake switch and ran the wire down the brake hose and zip tied it to the harness.

Works great, cost only a couple bucks.

Thanks, this is a great thread...

White to ground and white to buzzer ground side.
Orange to brake switch and other orange to ground...





Sat Nov 05, 2011 3:34 am

Member
GTS 250 ie
Joined: 05 Nov 2011
Posts: 5
Location: Sheffield UK
 
Member
GTS 250 ie
Joined: 05 Nov 2011
Posts: 5
Location: Sheffield UK
Sat Nov 05, 2011 3:34 am linkquote
turn signal beeper/power outlet
Just joined as new recruit: read your info. on beeper etc, can't wait to have a go myself. Cheers
Fri Nov 18, 2011 8:49 pm

Hooked
2008 GTS 250
Joined: 19 Aug 2011
Posts: 167
Location: Dolan Springs, AZ
 
Hooked
2008 GTS 250
Joined: 19 Aug 2011
Posts: 167
Location: Dolan Springs, AZ
Fri Nov 18, 2011 8:49 pm linkquote
Modified wiring for relay. Switch on ground side.

Same Same. Just the way it worked out.



⬆️    About 1 month elapsed between posts    ⬇️
Sat Dec 17, 2011 5:31 am

Enthusiast
GTS300
Joined: 14 Sep 2011
Posts: 93
Location: Florida
 
Enthusiast
GTS300
Joined: 14 Sep 2011
Posts: 93
Location: Florida
Sat Dec 17, 2011 5:31 am linkquote
Mod works great
This is my first real post on MV, so go easy if I don't get it right...

I followed Cinci John's method to the letter with a couple of twists suggested by others. I used epoxy to attach the wire block to the back of the knee panel, and used the crimp on connectors with one leg cut off to plug into the alarm block. I also used a marine type 12v receptacle instead of the kind you can get at the auto parts place. I'm planning on eventually getting that connector from Scooterwest that mates to the alarm block to make the whole installation a bit more ship shape.

I was a bit wary that the turn signal beeper would be too loud but found that I don't mind the fact that cagers take notice. Anything that raises awareness of my presence to surrounding traffic is a good thing, I figure. The beeper really does it's job too -I haven't accidentally left my signal on one time since install. Before, it was a daily occurrence.

My next tweak will be a button to open my community gate...as soon as I can locate a proper momentary switch.


You can just barely see one of those crimp on connectors in the top of photo before I cut one leg off


The marine receptacle looks great - no silver trim like the ones you get at the auto parts place


Plugging in the battery tender is now a piece of cake. No more removing the floor panel.

⬆️    About 9 months elapsed between posts    ⬇️
Sat Sep 08, 2012 7:14 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sat Sep 08, 2012 7:14 pm linkquote
30,000 views! Woo-hoo!!
There's some fine-looking work here!!
⬆️    About 2 months elapsed between posts    ⬇️
Sun Nov 04, 2012 3:42 pm

Lurker
GTS300
Joined: 04 Nov 2012
Posts: 3
Location: Australia
 
Lurker
GTS300
Joined: 04 Nov 2012
Posts: 3
Location: Australia
Sun Nov 04, 2012 3:42 pm linkquote
Brake relay and alarm interface
Yucca wrote:
I added the relay to cut out the buzzer at stop lights. I used the small terminal Strip and wired it like the drawing Cincinnati John posted except I switched the ground side of the buzzer.

I used a tap at the rear brake switch and ran the wire down the brake hose and zip tied it to the harness..
HI all, Thanks for the contributions on this thread. I've had a go at the wiring in the turn beeper and aux power connectors using the instructions here. So far so good.

I would like to have a crack at installing the relay to cut off the beeper while the break is applied. I read through the a post (quoted above) about how the break light wire was accessed.

Can anyone point to some instructions on how to access the brake light wire (I gather the the handlebar cover needs to be removed, bit worried about breaking something). Also what sort of connector was used to 'splice' into the wire in the picture?

Also, I was looking for something that might access the alarm connector in a cleaner way (I found the wires came loose on my first try and I didn't have much luck with the modified 'U' lugs). I came across this Alarm Interface Splitter over at scooter west (see attached image).

It occurs to me that one of the male plugs could be removed with the wires fed into the 'splitter' board and the other connecter left as is. Any comments about this as a connection solution?

Cheers,

Steve


Alarm splitter connector

Sun Nov 04, 2012 7:09 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sun Nov 04, 2012 7:09 pm linkquote
The male plug of that splitter could be used: cut off the female connectors along with the wires to one of them, splice to the remaining wires, and plug the male end into the scooter's female connector - but the price of that thing takes my breath away! I would most profoundly like to know the manufacturer and part no. of that male connector.

To access the brake light wires, you'd remove the headset per these instructions: GT/GTS: Headset Cover Removal.
The switched side of the brake circuit has white/black insulation - that's where you'd want to tap in.

Use a splice terminal (most auto parts stores will have 'em) to tap into the brake wire without cutting the wire. It's a clamp that pierces the insulation to make contact with the wire.



Thu Nov 08, 2012 10:38 pm

Lurker
GTS300
Joined: 04 Nov 2012
Posts: 3
Location: Australia
 
Lurker
GTS300
Joined: 04 Nov 2012
Posts: 3
Location: Australia
Thu Nov 08, 2012 10:38 pm linkquote
Thanks
Yes the alarm connector / splitter is not exactly cheep, but it does offer a clean solution I guess. Thanks very much for the additional info.
⬆️    About 1 year elapsed between posts    ⬇️
Sun Oct 06, 2013 2:26 pm

Hooked
Gts300ie
Joined: 28 Sep 2013
Posts: 182
Location: Milton Keynes, UK
 
Hooked
Gts300ie
Joined: 28 Sep 2013
Posts: 182
Location: Milton Keynes, UK
Sun Oct 06, 2013 2:26 pm linkquote
ExonicJay wrote:
Just kidding.

Three switches are for garage door openers
One Switch is for the Headlight Modulator
1 LED for alarm (Gorilla with remote pager)
And of course a cigar lighter also used as a charging port for the battery.
And the piezo beeper for the turn signals.

Picture shows battery tender plug connected



The the Right knee panel really does have MI-6 stuff.
Only Q and 007 know what it does.


I have now labeled some of the MI-6 functions on my ET4.



Here is where to by the labels:
http://www.aestheticreations.net/smartgroupbuy.htm
love this
Wed Oct 23, 2013 4:45 am

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Wed Oct 23, 2013 4:45 am linkquote
40,000 views and still kickin'!
Wed Oct 23, 2013 4:52 am

Hooked
Gts300ie
Joined: 28 Sep 2013
Posts: 182
Location: Milton Keynes, UK
 
Hooked
Gts300ie
Joined: 28 Sep 2013
Posts: 182
Location: Milton Keynes, UK
Wed Oct 23, 2013 4:52 am linkquote
Rightly so
Plenty of scooters should,have had this from the factory really
Great thread guys, well done
Wed Oct 23, 2013 4:58 am

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Wed Oct 23, 2013 4:58 am linkquote
Thanks. It was something of a group effort. BTW, the mod still works just fine after all the miles, even with the wires poked into the connector. But I sure would like to find a source for the mating connector...
Sun Nov 03, 2013 8:58 am

Banned
GTS 300
Joined: 25 Jul 2013
Posts: 417
Location: Rancho Mirage Calif
 
Banned
GTS 300
Joined: 25 Jul 2013
Posts: 417
Location: Rancho Mirage Calif
Wed Nov 20, 2013 6:46 am

Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
 
Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
Wed Nov 20, 2013 6:46 am linkquote
12v outlet with toggle switch
Has anyone wired a 12v outlet to unswitched lead with a toggle mounted next to outlet? So you can turn outlet on and off with toggle switch. I would like to charge battery via outlet, but would prefer to not have hot outlet 24/7.
Wed Nov 20, 2013 4:12 pm

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 40413
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 40413
Location: Pleasant Hill, CA
Wed Nov 20, 2013 4:12 pm linkquote
I'm sure people have - but why not just wire it via the ignition switch, so it's off when the scooter is locked? Saves the cost of a switch...
Wed Nov 20, 2013 5:54 pm

Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
 
Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
Wed Nov 20, 2013 5:54 pm linkquote
jimc wrote:
I'm sure people have - but why not just wire it via the ignition switch, so it's off when the scooter is locked? Saves the cost of a switch...
I park in a large parking garage and would like to occasionally hook up my battery tender to 12v outlet while the scooter is unattended. I've done a bit of research today and it looks pretty simple to wire the toggle inline with the hot lead.
Sat Nov 23, 2013 6:02 am

Enthusiast
GTS 250 2008
Joined: 10 Sep 2013
Posts: 71
Location: Newport Pagnell England
 
Enthusiast
GTS 250 2008
Joined: 10 Sep 2013
Posts: 71
Location: Newport Pagnell England
Sat Nov 23, 2013 6:02 am linkquote
Hi all

Please excuse my ignorance but I see that members are using the 12v socket to charge their batteries but could this be used to power accessories such as a sat nav.

Thanks again Phil
Sun Nov 24, 2013 6:34 am

Addicted
2005 GTS 250ie
Joined: 28 Jan 2012
Posts: 794
Location: Stamford, Lincolnshire
 
Addicted
2005 GTS 250ie
Joined: 28 Jan 2012
Posts: 794
Location: Stamford, Lincolnshire
Sun Nov 24, 2013 6:34 am linkquote
Thanks John,

Another successful mod!

Easy peasy , very clear instructions.

Cheers

Richard
Sun Nov 24, 2013 3:00 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sun Nov 24, 2013 3:00 pm linkquote
aerophil wrote:
Hi all

Please excuse my ignorance but I see that members are using the 12v socket to charge their batteries but could this be used to power accessories such as a sat nav.

Thanks again Phil
Sure; it'll work in either direction. A wire doesn't care which way the current flows...
Sun Nov 24, 2013 3:15 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sun Nov 24, 2013 3:15 pm linkquote
Re: 12v outlet with toggle switch
Tmoore wrote:
Has anyone wired a 12v outlet to unswitched lead with a toggle mounted next to outlet? So you can turn outlet on and off with toggle switch. I would like to charge battery via outlet, but would prefer to not have hot outlet 24/7.
That would work alright; but I'm not clear why having the plug hot continuously is undesirable. It must not be a security concern since you're contemplating putting a switch right next to it. Can you give me some background?
Sun Nov 24, 2013 7:23 pm

Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
 
Member
GTS Super 300ie
Joined: 14 Oct 2013
Posts: 9
Location: Chicago
Sun Nov 24, 2013 7:23 pm linkquote
Re: 12v outlet with toggle switch
Cincinnati John wrote:
Tmoore wrote:
Has anyone wired a 12v outlet to unswitched lead with a toggle mounted next to outlet? So you can turn outlet on and off with toggle switch. I would like to charge battery via outlet, but would prefer to not have hot outlet 24/7.
That would work alright; but I'm not clear why having the plug hot continuously is undesirable. It must not be a security concern since you're contemplating putting a switch right next to it. Can you give me some background?
I've ordered a waterproof outlet, but not sure how well they work. I'm thinking the on/off toggle would be a layer of protection for the battery in the environs. Might be overkill...
Mon Nov 25, 2013 9:47 am

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Mon Nov 25, 2013 9:47 am linkquote
Re: 12v outlet with toggle switch
Tmoore wrote:
Cincinnati John wrote:
Tmoore wrote:
Has anyone wired a 12v outlet to unswitched lead with a toggle mounted next to outlet? So you can turn outlet on and off with toggle switch. I would like to charge battery via outlet, but would prefer to not have hot outlet 24/7.
That would work alright; but I'm not clear why having the plug hot continuously is undesirable. It must not be a security concern since you're contemplating putting a switch right next to it. Can you give me some background?
I've ordered a waterproof outlet, but not sure how well they work. I'm thinking the on/off toggle would be a layer of protection for the battery in the environs. Might be overkill...
Honestly, I think you'd be fine to leave it hot all the time. Mine is no more waterproof than to have a plastic cover, and after five years I've never had a peep of trouble from it.
⬆️    About 8 months elapsed between posts    ⬇️
Fri Jul 25, 2014 4:33 am

Member
GTS 300 Sport
Joined: 10 Mar 2014
Posts: 6
Location: London, UK
 
Member
GTS 300 Sport
Joined: 10 Mar 2014
Posts: 6
Location: London, UK
Fri Jul 25, 2014 4:33 am linkquote
Micro USB charger
Firstly, thanks to the OP and all the other contributors to this thread. I have found it extremely useful as a noob to Vespa modifications.

I just wanted to add what I have done on my GTS. I realised that the only thing I would need to charge whilst riding would be my phone, which I use for SatNav or GPS speedometer. I therefore wanted a neater solution than a 12v socket which would require a USB adapter and a charging cable.

I managed to find a 12v to 5v converter with micro USB on ebay for about £3 (came from China so quite a long wait for delivery).

I hooked it up to the switched connectors on the alarm block as I won't need to charge when I'm parked.

The cable is long enough to route through the head unit and emerge through the left mirror opening. I have replaced the mirror with a RAM-type mount where my phone sits.

I'm generally very pleased with the result. The only issue I have is that when I am not using the cable, the end is exposed and I haven't been able to find a cover for it anywhere. I'm yet to see if moisture could cause any problems.

I'll add some pictures if anyone wants to have a look.



⬆️    About 7 months elapsed between posts    ⬇️
Wed Feb 25, 2015 3:59 am

Lurker
Vespa GTS super sport 300 ABS/ASR
Joined: 27 Nov 2014
Posts: 4
Location: Belgium
 
Lurker
Vespa GTS super sport 300 ABS/ASR
Joined: 27 Nov 2014
Posts: 4
Location: Belgium
Wed Feb 25, 2015 3:59 am linkquote
alarm connector not there anymore
I have a super sport 300 model 2014 and the alarm connector is not there anymore.
Can someone help me?
⬆️    About 8 months elapsed between posts    ⬇️
Sun Oct 25, 2015 4:36 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sun Oct 25, 2015 4:36 pm linkquote
60,000!
Tue Nov 03, 2015 3:28 pm

Addicted
2005 GTS 250ie
Joined: 28 Jan 2012
Posts: 794
Location: Stamford, Lincolnshire
 
Addicted
2005 GTS 250ie
Joined: 28 Jan 2012
Posts: 794
Location: Stamford, Lincolnshire
Tue Nov 03, 2015 3:28 pm linkquote
Using Cincinnati John's wiring diagram what would be the best way of silencing the beeps whilst waiting at a junction? I understand you need to splice into the black and white stopped wire from the rear brake lever. But where should this connect to?
Tue Nov 03, 2015 8:01 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Tue Nov 03, 2015 8:01 pm linkquote
waspman wrote:
Using Cincinnati John's wiring diagram what would be the best way of silencing the beeps whilst waiting at a junction? I understand you need to splice into the black and white stopped wire from the rear brake lever. But where should this connect to?
On the third page of this thread, the 18th post down, there's a wiring diagram for a circuit to disable the beeper when the brakes are applies. You'll need a relay to do it, with the coil of the relay energized from the brake light. You can tap into the black/white brake light wire at either of the brake handles.
⬆️    About 7 months elapsed between posts    ⬇️
Fri May 20, 2016 10:54 am

Hooked
GTS250ie
Joined: 18 Feb 2016
Posts: 193
Location: Treasure Coast, FL
 
Hooked
GTS250ie
Joined: 18 Feb 2016
Posts: 193
Location: Treasure Coast, FL
Fri May 20, 2016 10:54 am linkquote
This is a great mod.
I got the diodes and the Radio Shack buzzer and it worked well.
It was so loud I added a switch so I didn't attract attention at stop lights
Then I realized that I had it off too much so it defeated the purpose.
So my modification to this setup is to add a relay so that the beeping stops while the brake is pulled. That was y stoplights or stop signs I don't sound like a truck backing up.
⬆️    About 3 months elapsed between posts    ⬇️
Thu Aug 11, 2016 5:40 am

Lurker
2014 GTS 300
Joined: 11 Aug 2016
Posts: 1
Location: Palm Coast, Florida
 
Lurker
2014 GTS 300
Joined: 11 Aug 2016
Posts: 1
Location: Palm Coast, Florida
Thu Aug 11, 2016 5:40 am linkquote
Turn signal relay that beeps just plug it in
Here is a turn signal relay that beeps I found on ebay. I just installed it on my 2014 Vespa GTS 300. It is just the right amount of noise for me. I can hear it find at 60 mph or more. I do not wear earplugs or a helmet that covers my ears however. I just replaces the relay that is plugged in behing the left knee hole cover. It was only $6.98 free shipping.
http://www.ebay.com/itm/331912582674?orderid=&rmvSB=true


Pic of the singing (beeping) turn signal relay

⬆️    About 2 years elapsed between posts    ⬇️
Tue Sep 11, 2018 7:44 am

Lurker
Gt200
Joined: 09 Sep 2018
Posts: 3
Location: Santa Cruz ca
 
Lurker
Gt200
Joined: 09 Sep 2018
Posts: 3
Location: Santa Cruz ca
Tue Sep 11, 2018 7:44 am linkquote
Thanks! Great wiring diagrams
This will be my next mod this weekend.
Thanks for the ideas.
⬆️    About 2 months elapsed between posts    ⬇️
Sat Nov 10, 2018 10:51 am

Ossessionato
2018 Vespa GTS 300 ABS- Bianco
Joined: 20 Apr 2013
Posts: 2159
Location: E. KY
 
Ossessionato
2018 Vespa GTS 300 ABS- Bianco
Joined: 20 Apr 2013
Posts: 2159
Location: E. KY
Sat Nov 10, 2018 10:51 am linkquote
I suggest that those who desire to install power outlets on a GTS shoulder panel take a look @ Scooterwest install video then proceed as fits your own outlet needs and install skills.
My 2018 GTS has two power outlet, side by side in the left shoulder, neither of which is a kit. I ran straight off my battery, by choice and have whats called variously a BMW/Powerlet/Hella/DIN outlet beside a dual USB outlet. These are sold on Amazon and ebay at the best prices and offer a better connection than a cig lighter or the low powered USB thats OE in the glovebox of my scooter.
I see zero need for a terminal panel nor a bunch of switches. I also suggest buying outlets that do not have plastic hinges, but spring flaps instead.
There are also waterproof outlets sold in the current MC web market place. RAM mounts makes great products that lend themselves to these scooters. I use one for my Garmin NUVI holder along with a navigation type of power cord from a powersports specialty mfg.-just google- "Red Band power cord" for a cord that works well in specialty links to power your GPS.
While I opted for a battery direct hookup, with inline fuse, on purpose you can easily go through the key by stealing power from the proper scooter circuit. I wanted power for my htd jackt. I also have an SAE connector for battery tender wired direct to battery that exits the rear of the rubber battery cover. it can also run my air compressor or my jacket with a convertor connection. Anyone needing help feel free to contact me via PM and I'll walk you through an install.
⬆️    About 2 years elapsed between posts    ⬇️
Sat May 23, 2020 4:54 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sat May 23, 2020 4:54 pm linkquote
100,000 reads. Unbelievable.
There's been some good ideas and good work posted in this thread!
Sat May 23, 2020 5:06 pm

Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
 
Ossessionato
'07 GTS-250ie - sold and gone
Joined: 23 Aug 2007
Posts: 2023
Location: the Queen City of the West, aka Porkopolis
Sat May 23, 2020 5:06 pm linkquote
Cincinnati John wrote:
waspman wrote:
Using Cincinnati John's wiring diagram what would be the best way of silencing the beeps whilst waiting at a junction? I understand you need to splice into the black and white stopped wire from the rear brake lever. But where should this connect to?
On the third page of this thread, the 18th post down, there's a wiring diagram for a circuit to disable the beeper when the brakes are applies. You'll need a relay to do it, with the coil of the relay energized from the brake light. You can tap into the black/white brake light wire at either of the brake handles.
This is a very late response: A simpler way to do this is to ground the beeper at the + side of the brake light (or at the switched side of one of the brake lever switches). Normally when the brake light is off, the beeper current will go to ground through the relatively low resistance of the brake light bulb filament. But when the brake light is on, the ground side of the beeper will be at high potential and there won't be voltage across the beeper to make it beep.
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