strobes w/ alarm

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=46617
Printed Date: May 20, 2024 at 7:55 AM

Topic: strobes w/ alarm

Posted By: patrickmhs02
Subject: strobes w/ alarm
Date Posted: January 01, 2005 at 10:18 PM

This is my second post (I think). I have a 94 Mustang with an audiovox pro 9842b alarm (professionally installed). I have wired my neon underbody kit to my parking lights successfully with no relay (once I get more time I will install one) and now I have purchased a headlight strobe kit from Optx. My goal was to wire them up so they only strobe when my alarm is triggered (separate from parking lites—don’t wanna get pulled over b/c of flashing strobes). If I could afford to, I would purchase the Whelen Police Strobes like this:
https://www.spdkilz.com/z06dusk.html (I am not that rich…so I decided to go a little bit cheaper!)
Now to my problem: I thought I could tap into the siren using a relay so when the siren goes off it would trigger the relay to turn on the strobes. I was successful but the problem now is that my siren only “chirps” sometimes. Once I removed everything the siren works properly. I had the relay and strobes grounded to the neg terminal of my battery (since everything was close to the it).
This is the setup of my relay:
87->12v constant w/ inline fuse
86->wire tapped from siren
85->ground
30->pos wire from strobes
Am I doing something wrong? Or is there another way to do this? I've seen the strobes @ nite and it looks great…but now I want to put them to use. And I think my neighbors are going to kill me if my alarm goes off 1 more time…I would love to try to finish this project!

thanx in advance
patrichmhs02

Replies:

Posted By: draasch
Date Posted: January 01, 2005 at 10:26 PM

use two relays...one for each item........

-------------
Good Luck
David
Ace Security
813-376-9778
Tampa
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Posted By: patrickmhs02
Date Posted: January 02, 2005 at 12:56 PM

how would i go about doing that

Posted By: draasch
Date Posted: January 04, 2005 at 9:55 AM

your 12 volt output from the alarm to 86 on both relays

85 of both to ground

30 of both to fused 12 volts

87-of one relay to the strobe pack and 87 of the other one to the siren.

-------------
Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt

Posted By: patrickmhs02
Date Posted: January 04, 2005 at 7:27 PM

thanx for the help, though i am a little confused on where to find a 12 volt output from my alarm?
also, would i have to add another relay if i wanted to wire another set of strobes to my tail lights?

thanks once again

Posted By: draasch
Date Posted: January 04, 2005 at 8:34 PM

your siren out put should be 12 volts....add a relay for item that you will run off the siren wire....just dont go over board

-------------
Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt