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Dim dome light

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=26719
Printed Date: July 20, 2025 at 9:42 PM


Topic: Dim dome light

Posted By: sterrell
Subject: Dim dome light
Date Posted: February 18, 2004 at 10:53 AM

My alarm has a negative input for the door trigger and a negative 500mA output for dome light supervision.  I have hooked both of these up to the door trigger wire (-).  Now, when I unlock the door/disarm the alarm, the dome light lights dimly (like it is not getting enough current) and the alarm sounds.  I believe that the negative door trigger input on the alarm may be drawing all the current directly from the dome light output from the alarm.  Is this the case?  If so, should i try to block this current with a diode or something.  Everything I've read says you just hook both wires directly to the door trigger wire.  Any suggestions would help.

Thanks,

Scott




Replies:

Posted By: kgerry
Date Posted: February 18, 2004 at 11:07 AM
you have to use a relay for domelight supervision...have the low current negative out trip a relay to then activate the domelight

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979



Posted By: sterrell
Date Posted: February 18, 2004 at 11:42 AM
Thanks alot, I think that will do the trick.


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