2001 Hyundai Elantra alarm/remote start

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=88244
Printed Date: May 05, 2025 at 6:10 AM

Topic: 2001 Hyundai Elantra alarm/remote start

Posted By: browerb
Subject: 2001 Hyundai Elantra alarm/remote start
Date Posted: January 02, 2007 at 7:37 PM

Hello Everyone,

I could use some help installing a remote start, keyless entry and alarm to a 2001 hyundai elantra which currently has factory keyless entry installed. I'm in the process of installing a Huatai HT800 system.

The first problem I'm seeming to have is triggering the keyless entry. The current keyless entry is negative, I spliced the off line into the power unlock wire (yellow orange), spliced the on line into the power lock wire (yellow) and grounded two more wires from the system. I press lock to arm the system and the doors do not lock. Not sure if my wiring diagram is wrong or if maybe I need a relay for power lock and a relay for power unlock.

I also tried running a power trunk selenoid. I have the wiring down ok but I'm concerned that I have it spliced into the ignition constant 12v along with the car starter. So I have two splices in the ignition 12v constant. I was wondering if this is a concern and should use a different 12v source for the power trunk. If you feel I should any idea where I can locate another 12 V constant.

Another question I have is about the parking lights. I have one negative source and two positive sources for the parking lights. My system I installed has two positive wires coming out. Can I just splice my two positive outputs into the the two positive wire or would I need a relay.

I also have a battery charging indicator or engine oil pressure output from the system, any idea where I would pick up that wire? Do you think I could wire it into the tach wire?

ok last question, I have a power windo output on the new system, any idea where I can splice into this one?

Sorry for all the querstions, This is my first attempt to install a system into my car. I was hoping everything would go well unfortunately I ran into a couple of snafus. Any help would be apprciated.

Thanks,

Brian

Replies:

Posted By: KarTuneMan
Date Posted: January 02, 2007 at 10:29 PM

What are the "two wires grounded form the system" ???

The power connection for you trunk pop is fine.

On the parking light flash....It is recomended that one use the NEG(-) light flash, Blue at the column. NOT the pos. You could damage the light circuit. (Per the Astrochart)

I would use a tach signal.... Blue in black plug BEHIND the guage cluster. It's the one in the middle.

-------------

Posted By: browerb
Date Posted: January 03, 2007 at 7:02 PM

Below is the install diagram for the keyless entry. I used the Negative trigger diagram and grounded the yellow and the yellow/black wiress.

For a Negative Trigger it states

NC Orange Cut

COM White Off Signal

NO Yellow Ground

NC ORANGE / Black Cut

COM White Black On Signal

NO Yellow Black Ground

It doesn't really say ground, there is a symbol with three dashes on top of each other which I'm assuming is ground. Any ideas?

You say to tap the negative parking lights, Can I do this with the positive outputs; that is all I have in my system for the parking lights, If so do I splice both into the the negative? Do I need a relay to do this?

Thanks your help is definitely appreciated.

Posted By: browerb
Date Posted: January 04, 2007 at 5:12 PM

If anyone could help with the door locks and parking lights that would be cool.

Thanks

Posted By: browerb
Date Posted: January 04, 2007 at 9:22 PM

Anyone have a wiring diagram for a 2001 Hyundai Elantra? Trying to install security system with keyless, alrm and remote start. Car has factory installed Keyless and Alarm.

Thanks

Posted By: jrthistle
Date Posted: January 05, 2007 at 7:30 PM

12 VOLT CONSTANT	RED (+)	IGNITION SWITCH HARNESS
STARTER	WHITE (+)	IGNITION SWITCH HARNESS
STARTER 2	N/A
IGNITION 1	RED (+)	IGNITION SWITCH HARNESS
IGNITION 2	N/A
IGNITION 3	N/A
ACCESSORY /HEATER BLOWER 1	RED (+)	IGNITION SWITCH HARNESS
ACCESSORY /HEATER BLOWER 2	YELLOW (+)	IGNITION SWITCH HARNESS
KEYSENSE	N/A
PARKING LIGHTS ( - )	BLUE (-)	@ STEERING COLUMN HARNESS
PARKING LIGHTS ( + )	GREEN/ ORANGE (+) and PINK (+) Use both, See NOTE *2	@ BLACK 14 PIN PLUG, on the FRONT of the FUSE BOX BELOW THE FUSES	14301_ELANTRA_DUAL PARKING LIGHT DIAGRAM.pdf
POWER LOCK	YELLOW (TYPE B) See NOTE *1	@ RELAY BEHIND CENTEROF DASH TYPE (B)	14301_Elantra_CENTERAL LOCKING DIAGRAM JBS UNITS.pdf
POWER UNLOCK	YELLOW/ORANGE (TYPE B) See NOTE *1	@ RELAY BEHIND CENTER OF DASH TYPE (B)	14301_Elantra_CENTERAL LOCKING DIAGRAM ALERT SHELBY UNITS.pdf
LOCK MOTOR WIRE	GRAY (+)	@ RELAY behind CENTER of DASH
DOOR TRIGGER	YELLOW (-)	@ WHITE 22-PIN PLUG IN DRIVERS KICK PANEL
DOMELIGHT SUPERVISION	USE DOOR TRIGGER, Requires Part #775 Relay
TRUNK RELEASE	N/A
SLIDING POWER DOOR	N/A
HORN	RED (-)	@ STEERING COLUMN HARNESS
TACH	BLUE	@ ECM, ABOVE THE DRIVERS KICK PANEL
WAIT TO START LIGHT	N/A
BRAKE	WHITE (+)	@ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM	N/A
ANTI-THEFT	TRANSPONDER ANTI-THEFT SYSTEM (Some Vehicles), if equipped, REQUIRES 791 BYPASS MODULE AND EXTRA IGNITION KEY	TRANSPONDER @ IGNITION SWITCH TUMBLER

Posted By: coolcatbro
Date Posted: January 05, 2007 at 8:34 PM

Hi, newbie here...I just bought a 2001 Elantra and have a "dumb" question?

How do I tell if there is a Keyless system already in my car?

I know it has electric locks and the car came with a remote for the Hyundai Elantra. (but it may be for a different car).

The remote I have doesn't open or lock when using the remote.

tried a new battery, no good.

looked in the fuse box and it appears there isn't a fuse in the holder marked DRL?
Is there a relay or something to look for that will tell me if it has the Factory Keyless and its just my Remote?

Any inputs appreciated....