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adding onto factory door locks

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=18893
Printed Date: May 15, 2025 at 5:48 PM


Topic: adding onto factory door locks

Posted By: jbassman84
Subject: adding onto factory door locks
Date Posted: September 14, 2003 at 8:39 PM

In the next few day i i will be installing a car alarm in an 03 kia rio. The owner wants me to have to alarm control the door locks too,  i downloaded  a wiring diagram for for the car from one of the links on this site, and it showed the the door lock and unlock are controled on the same wire. i haven't had a chance to metter the wires yet so see if theres anothere one thats also used with locks, i just wanted to see if anyone out here knew what wires i should be look for or how its wired. thanks

the site i got the wire diagram from was bulldog




Replies:

Posted By: c2deez
Date Posted: September 14, 2003 at 10:40 PM
I've never done an 03 KIA Rio, but it sounds like the veh has multiplexed(resistor based) doorlocks. In this type of system, 1 wire controlls lock\unlock. Different voltage(pos or neg) read by the wire triggers lock or unlock. You will need 2 relays and whatever value resistor is required to mimic the 12v+ or 12v- pulse. The tech info you received should have given you a resistor value.
Hope this helps!


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