create a ground when armed

Home / the12volt's Install Bay / Car Security and Convenience / create a ground when armed (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

erusso17

Member - Posts: 6

Joined: March 08, 2008

Posted: February 03, 2010 at 10:04 PM / IP Logged

Hello, I am looking to install the DEI 508d and 516U in my car. My car (2009 G37 coupe) has the factory alarm and no Ground When Armed that i know of. Im looking to see if there is a way i can find, or create a ground when armed in my car. thank you!

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: February 04, 2010 at 3:02 AM / IP Logged

Does it have a +12V when armed?

If so, an inverting (polarity) relay see Relays - Converting Polarity on this site. (The alarm turns on a relay which connects ground #30 to #87.)

Otherwise others will have to answer...

tedmond

Gold - Posts: 4,610

This member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.

Joined: January 06, 2007

Location: Ontario, Canada

Posted: February 04, 2010 at 6:43 AM / IP Logged

if your trying to wire in shock sesors only to a factory alarm, dont even bother. there is no way to trigger the factory alarm with aftermarket sensors.

Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

tommy...

Gold - Posts: 1,901

Joined: December 10, 2004

Location: United States

Posted: February 04, 2010 at 6:49 AM / IP Logged

tedmond wrote:

if your trying to wire in shock sesors only to a factory alarm, dont even bother. there is no way to trigger the factory alarm with aftermarket sensors.

Why...Are you meaning on this specific car...? We use to install just a shock sensor on factory alarms on toyota,honda,etc...?

M.E.C.P & First-Class

Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

erusso17

Member - Posts: 6

Joined: March 08, 2008

Posted: February 04, 2010 at 11:57 PM / IP Logged

i really dont want this tied into my cars alarm at all. I would just like the 508d to trigger the 516u so if someone comes near my car the voice alarm will trigger. I think this is possible if i can create a simple ground when armed so the 508d knows when my car is off.

erusso17

Member - Posts: 6

Joined: March 08, 2008

Posted: February 04, 2010 at 11:58 PM / IP Logged

off and locked (preferably)

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: February 05, 2010 at 12:03 AM / IP Logged

Microwave detector.

erusso17

Member - Posts: 6

Joined: March 08, 2008

Posted: February 05, 2010 at 12:23 AM / IP Logged

im sorry, what is a microwave detector and how can i use it to create a ground when armed? thanks again

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: February 05, 2010 at 4:48 AM / IP Logged

A microwave detector is one that doesn't respond to moving air ant isn't too susceptible to false glass breakage triggers (if at all AFAIK).

It is sometimes used as a proximity detector.

I got one so that I can arm my alarm with windows open and detect an intruding torso or part thereof by not air etc (ie, ultrasonic detectors would false trigger).

Although like may detectors they are often a ground output (an "open collector" output), it is merely a detector that can be used for alarms etc.

KPierson

Platinum - Posts: 3,527

This member consistently provides reliable information

Joined: April 14, 2005

Location: Ohio, United States

Posted: February 09, 2010 at 9:51 PM / IP Logged

OK, so I have way too much time on my hands. When I first read this thread I sketched out a drawing of how I thought I could make a gwa output using only transistors and resistors. Tonight I finally built it, tweaked it a bit, and redid it in paint. It works great, toggling the output based on (+) actuator triggers.

create a ground when armed -- posted image.

Kevin Pierson

Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.