2003 Kia Optima Alarm wiring

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14541
Printed Date: May 11, 2025 at 9:59 AM

Topic: 2003 Kia Optima Alarm wiring

Posted By: Incubus777
Subject: 2003 Kia Optima Alarm wiring
Date Posted: June 06, 2003 at 1:32 PM

Could someone please give me the alarm wiring diagram for a 2003 Kia Optima.

Thanx!

-Cory

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If I had a dime for every time you walked away, I could afford to not give a sh*t and buy a drink and drown the day.

Replies:

Posted By: the12volt
Date Posted: June 06, 2003 at 2:00 PM

Kia

Optima

2003

Remote Starter Wiring Colors and Notes
Function	Vehicle Color	Location
Start:	Yellow (+)	Ignition switch harness
Ignition #1:	Pink (+)	Ignition switch harness
Ignition #2:	N/A	Ignition switch harness
Ignition #3:	N/A	Ignition switch harness
Accessory:	Orange (+)	Ignition switch harness
Brake Light:	Green(+)	Brake pedal switch
Tach Signal:	White (AC)	Instrument cluster or ECM*
Parking Lights:	Pink or BROWN / Orange (+)	Fuse box
Headlights:	N/A
OEM Alarm Disarm:	Factory remote only
OEM Alarm Arm:	Factory remote only
Diesel Glow Plug:	N/A
Clutch Bypass Wire:	N/A
Notes:	*The Engine Control Module (ECM) is behind the lower center of the dash. On the 2.4L can also use white or orange at the igni

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Posted By: the12volt
Date Posted: June 06, 2003 at 2:01 PM

Kia

Optima

2003

Alarm and Keyless Entry Wiring Colors and Notes
Function	Vehicle Color	Location
Constant +12 Volts:	Red (x2)	Ignition switch harness
Starter Kill:	Yellow (+)	Ignition switch harness
Ignition +12 Volts:	Pink (+)	Ignition switch harness
Dome Lights/Superv:	Yellow (-)	Drivers kick panel or ETACS**
OEM Horn:	Yellow (-)	Steering column harness
Power Lock:	White (-)	Back of the fuse box or ETACS**
Power Unlock:	Blue (-)	Back of the fuse box or ETACS**
Trunk Release:	Blue (+)	Drivers kick panel harness to the rear
Alarm Input Wire:	Yellow (-)	Drivers kick panel or ETACS**
Notes:	**The Electronic Time and Alarm Control System (ETACS) module is attached to the underdash fuse box.

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