siren chirp when turning off ignition

Home / the12volt's Install Bay / Car Security and Convenience / siren chirp when turning off ignition (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

agito

Member - Posts: 4

Joined: February 13, 2008

Posted: May 01, 2008 at 8:05 PM / IP Logged

Hi everyone, I just finished rewiring a few more sirens using a relay. But now whenever I turn off the ignition, it gives a slight chirp. Any ideas on how to stop this feedback?

Thanks

Ken

dtk1

Copper - Posts: 179

Joined: June 21, 2007

Location: United States

Posted: May 01, 2008 at 9:43 PM / IP Logged

can you give us more information how you wired up the relay

agito

Member - Posts: 4

Joined: February 13, 2008

Posted: May 01, 2008 at 10:05 PM / IP Logged

sure thing, I have my siren output on relay contact 86, contact 85 is grounded, 15amp fused positive from ignition to contact 30, and contact 87 goes to my sirens.

dtk1

Copper - Posts: 179

Joined: June 21, 2007

Location: United States

Posted: May 01, 2008 at 10:31 PM / IP Logged

your using ignition as your output power source ? try using constant other wise the relay looks perfect how many sires are you using?

agito

Member - Posts: 4

Joined: February 13, 2008

Posted: May 01, 2008 at 10:49 PM / IP Logged

sorry i just checked its on a constant not ign. There's 4 wires from the relay. I tried moving to the battery directly and it did the same thing. I'm thinking the siren output is putting out some noise. Would a small resistor help?

dtk1

Copper - Posts: 179

Joined: June 21, 2007

Location: United States

Posted: May 01, 2008 at 10:54 PM / IP Logged

try unplugging the relay and see if the siren chirp connecting it directly to the output of the brain. and see id it chirp

Mike M2

Platinum - Posts: 2,652

Joined: June 29, 2005

Location: United States

Posted: May 02, 2008 at 6:56 AM / IP Logged

You could also try putting 85 to your armed output(the starter kill wire) so that it won't engage the relay unless it's actually armed....

Mike M2

Tech Manager

CS Dealer Services

KPierson

Platinum - Posts: 3,527

This member consistently provides reliable information

Joined: April 14, 2005

Location: Ohio, United States

Posted: May 02, 2008 at 10:12 AM / IP Logged

Did you put a diode across the coil of the relay? I doubt the siren output was designed to drive an inductive load.

However, I'm not sure how not including a diode would cause it to blip like that, but I would still make sure a diode is installed.

Kevin Pierson

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: May 02, 2008 at 10:48 AM / IP Logged

Don't know where the poster is but here the Cat I alarms with passive immobilisation will sometimes do that.

agito

Member - Posts: 4

Joined: February 13, 2008

Posted: May 03, 2008 at 12:58 PM / IP Logged

Thanks for the ideas guys

KPierson wrote:

Did you put a diode across the coil of the relay? I doubt the siren output was designed to drive an inductive load.

However, I'm not sure how not including a diode would cause it to blip like that, but I would still make sure a diode is installed.

Kevin, I was thinking the exact same thing last night regarding the inductive load. Would putting a small amount of resistance help with the diode? and which direction should the diode be installed?

Thanks

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.