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2003 Focus

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=26390
Printed Date: July 22, 2025 at 5:00 AM


Topic: 2003 Focus

Posted By: kaweahnet
Subject: 2003 Focus
Date Posted: February 13, 2004 at 10:14 AM

First alarm in many years - so I may end up with lots of questions.  Here's the first one.

I've used the door trigger & dome light as the same thing in the past.  However, the 2003 Focus has a courtesy light upon exit - so I'm probably going to need to use a relay.  Question: Is the door trigger wire noted in the diagram [Blue/Black (-)] the same used for the dome light?  I see on the Mustang it's a BLACK/ White wire.



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David Killion
BMW Fanatic!



Replies:

Posted By: draasch
Date Posted: February 13, 2004 at 2:52 PM
are you just trying to hook up the door trigger??


Dome Lights/Superv: BLACK/ Blue (-) Low in the drivers kick panel area


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Good Luck
David
Ace Security
813-376-9778
Tampa
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Posted By: kaweahnet
Date Posted: February 13, 2004 at 9:16 PM

Well, the problem is that the alarm has a dome light output also.  Can I just tie those two together, because they give me some funky relay configuration to use in the manual but I don't know why.

The alarm shouldn't turn the dome light on when the arming so I wouldn't see why it should cause a problem.  On disarming the domelight should come on but it shouldn't bother the sensor.

What do you think?



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David Killion
BMW Fanatic!




Posted By: mecpcert_1
Date Posted: February 15, 2004 at 3:34 AM

the reason they give you the relay diagram is because most alarms only support a  200mA output. unless it has built in relays.  

NO you cannot just tie the two wires together, you must use a relay.

domlight output wire goes to pin 85 of relay.(-)

pin 86 goes to 12 volts constant.

87 goes to ground.

30 goes to the door trigger wire from alarm.

             hope this helps, good luck and have fun!!!



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do it right the first time....less warranty work=more money!:)





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