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791XV Dual Polarity Door Lock Question

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=32709
Printed Date: May 16, 2025 at 4:12 AM


Topic: 791XV Dual Polarity Door Lock Question

Posted By: JohnnyBoy
Subject: 791XV Dual Polarity Door Lock Question
Date Posted: May 25, 2004 at 11:42 AM

I installed a Viper 791XV on my Infiniti G35 and everything is working great.  But I have a question on the dual polarity door lock wires. Since each wire puts out both a positive & negative (+ lock & - unlock for one wire and vice versa for the other), wouldn't there be a short if the alarm was trying to lock the doors while I was unlocking them from the car at the same time?

I thought a diode on each wire would prevent this, but when I installed them, I noticed strange behavior.  The locks would work fine until a couple of minutes after arming and then they wouldn't work.

Since this car uses extended pulses on the lock wires to raise and lower the windows, I would think there would be a greater chance of putting + and - on the wire at the same time.  i.e. if I have a 10 second neg. pulse on the lock wire rolling the windows up and I disarm during that time a + would be sent out on the same lock wire.

Thanks,

~John




Replies:

Posted By: sroth140
Date Posted: May 26, 2004 at 1:29 AM
it shouldnt damage anything but if you want to you can use the 451m that comes with it.  it has a 10 inline fuse.  just use the blue/black, GREEN/ black the same as youd use the green and blue.  cap off the WHITE/ black and BROWN / black.  take purple to 12v.

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MECP certified installer




Posted By: raydawg357
Date Posted: May 26, 2004 at 8:31 AM
What year G35, and is it a coupe or sedan?  The sedans are (-) pulse but the coupes are 5 wire and you will have to use the 451M as sroth stated, but you will have to use WHITE/ black and BROWN / black as well as the blue/black, GREEN/ blank and purple wires.

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Do it right the first time




Posted By: JohnnyBoy
Date Posted: May 26, 2004 at 9:11 AM

raydawg357 wrote:

What year G35, and is it a coupe or sedan?  The sedans are (-) pulse but the coupes are 5 wire and you will have to use the 451M as sroth stated, but you will have to use WHITE/ black and BROWN / black as well as the blue/black, GREEN/ blank and purple wires.

It's a 2004 Coupe.  I've connected the blue & green doorlock wires to the drivers door key cylinder switch.  I've also connected the channel 4 & 5 wires to the same wires for windows up/down.






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