relays needed or will diodes work?

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=50299
Printed Date: May 11, 2024 at 8:20 AM

Topic: relays needed or will diodes work?

Posted By: bruc007
Subject: relays needed or will diodes work?
Date Posted: February 17, 2005 at 8:47 AM

Hi guys , just wondering I am wiring up door locks on an 04 Grand Am single wire system and was wondering to isolate the lock and unlock wires do I need relays? I am sure I wired up a chrysler single-wire system with resistors and one way diodes and it was fine.It just seems easier than running all the wires for two relays .Is it ok to do this?

Thanks ,Bruce

Replies:

Posted By: KarTuneMan
Date Posted: February 17, 2005 at 11:00 AM

This car work just like the chrysler.....NEG(-) pulse thru resistors.

Lock is solid ground, unlock is ground thru 500ohm resistor.

NO relays or diodes

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Posted By: mkaudio17
Date Posted: February 17, 2005 at 12:46 PM

you will need to use a relay for the doorlocks just becuase unless the alarm has built in door lock relays the ground pulse throgh from the brain is not strong enought to go through the resistors

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Professionalism.

Posted By: thepencil
Date Posted: February 17, 2005 at 1:38 PM

PONTIAC, GRAND AM, 2004, Power Lock

Lock is straight negative trigger. Unlock is negative trigger thru a 1.5K (1500) ohm resistor. MUST use relays. MUST close doors to lock with a single pulse.

The BCM (Body Control Module) is between the blower motor and the passenger side kick panel.

Power Lock white - lt. gry plug, pin A2 @ BCM
Power Unlock same wire as power lock

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