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2003 grand am 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=67704
Printed Date: June 29, 2025 at 5:55 PM


Topic: 2003 grand am door locks

Posted By: stevenlusk
Subject: 2003 grand am door locks
Date Posted: December 05, 2005 at 1:35 PM

i need to know what kind of relay setup i need to use on a 2003 grand am it uses the same wire for locking and unlocking. lock uses a negative pulse and unlock uses a negative pulse through a 1500 ohm resistor. i need to know how to set up the realays includiding what each post on a reay would need to be



Replies:

Posted By: cntrylvr79
Date Posted: December 05, 2005 at 1:55 PM

stevenlusk wrote:

i need to know what kind of relay setup i need to use on a 2003 grand am it uses the same wire for locking and unlocking. lock uses a negative pulse and unlock uses a negative pulse through a 1500 ohm resistor. i need to know how to set up the realays includiding what each post on a reay would need to be

Well first i'm going to run under the impression that the system you're installing provides a negative lock/unlock out put.  So here it goes.

Relay 1:  85 goes to the lock output of the system.  86 goes to constant +12volts.  87 goes to ground.  and pin 30 goes to the wire in the car.

relay 2:  85 goes to the unlock output of the system.  86 goes to constant +12volts.  87 goes to ground.  finally 30  is where you want to solder the resistor inline.  Take a short wire hook to the pin of the relay.  Then solder one side of the resistor to that wire.  Next take another piece of wire and solder it to the other side of the resistor.  Finally hook that wire up to the wire in the car.



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Cause I'm So white and nerdy...
First Class Certi-fried installer




Posted By: thepencil
Date Posted: December 05, 2005 at 2:05 PM
Diagram

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