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will this fry alarm brain?

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=41817
Printed Date: May 18, 2025 at 4:31 AM


Topic: will this fry alarm brain?

Posted By: angelcity
Subject: will this fry alarm brain?
Date Posted: October 28, 2004 at 1:32 PM

im trying to hook up my dome light to alarm's negative interior light wire. will this 12v+ going to the brain fry it? Or will this diagram even work all together even work at all? can any one give me any tips or diagrams. 
posted_image

have a look pleas @ www.cardomain.com/memberpage/671111  diagrams on bottom of page.




Replies:

Posted By: chrane
Date Posted: October 29, 2004 at 12:00 AM
why would you put 12v to the alarm, why not just hook up a relay?

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Aaron



Posted By: angelcity
Date Posted: October 29, 2004 at 1:02 AM
thats what im trying to do is hook up a relay. from the alarms (-) output to a relay, to the dome light.  the diagram of the relay is on the link can some one please have a look and lend a helping hand?



Posted By: angelcity
Date Posted: October 29, 2004 at 1:32 AM

posted_image




Posted By: angelcity
Date Posted: October 29, 2004 at 1:39 AM

will the 12v+ going thru the coil to the alarm fry the alarm's brain?




Posted By: Velocity Motors
Date Posted: October 29, 2004 at 1:50 AM
If the car has a (-) dome light wire, then you will need to use this: https://www.velocitymotorsport.com/images/install_notes/105.jpg

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: angelcity
Date Posted: October 29, 2004 at 11:05 AM
the (-) trigger input is't from the door. it's from the brain of the alarm sending a (-) tirgger out put for 30 to 60 seconds after alarm is disarmed. will the 12v+  coming from the contant damage the brain?



Posted By: Velocity Motors
Date Posted: October 30, 2004 at 11:53 AM
No 12 volts won't fry the unit.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA


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