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interupt auto headlight

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=131403
Printed Date: May 13, 2025 at 4:07 AM


Topic: interupt auto headlight

Posted By: mw0652
Subject: interupt auto headlight
Date Posted: May 14, 2012 at 12:20 PM

How do i interupt an auto headlight in a 2007 Kia Sedona? I know I have to use a relay but I am not sure how to wire it. Thank you



Replies:

Posted By: kreg357
Date Posted: May 14, 2012 at 1:13 PM

Depends on the method used to indicate the Headlight switch is in the Auto position.  While I haven't done a 2007 Sedona,
and I can't find any info on your vehicle, on other KIA / Hyundai models, there is a wire ( usually Green ) found at the headlight
switch connector that goes to (-) when in the Auto position.   Use a relay to interrupt that wire during remote start.  Here are the
relay connections.
Relay Pin 85 to R/S Ground When Running output ( aka (-) Second Status, (-) Third Ignition, etc )
Relay Pin 86 to +12V constant
Relay Pin 30 to one side of cut Auto Headlight wire
Relay Pin 87A to other side of cut Auto Headlight wire
Relay Pin 87 not used / insulate

Here is a link to a KIA Optima Pictorial showing the Headlight connector and Auto Headlight wire :
https://www.the12volt.com/installbay/forum_posts.asp~TID~130985~PN~1



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Soldering is fun!


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