Do I need blocking diodes

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=5937
Printed Date: July 21, 2025 at 8:09 PM

Topic: Do I need blocking diodes

Posted By: kevinh30
Subject: Do I need blocking diodes
Date Posted: November 26, 2002 at 9:43 PM

My alarm puts out both - and + outputs foor the door locks. Does this mean I need to use a blocking diode.

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kjh

Replies:

Posted By: securinu
Date Posted: November 26, 2002 at 10:39 PM

not for most cars what type of vehicle.

Posted By: kevinh30
Date Posted: November 27, 2002 at 4:52 AM

xterra 2000

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kjh

Posted By: cpgoose
Date Posted: November 27, 2002 at 6:43 AM

here's the wiring diagram link for your car: 2000 Nissan Xterra Alarm Information

Posted By: mali
Date Posted: November 27, 2002 at 1:40 PM

in most cases you don't. these isolation diodes are mostly used when you are using one alarm input to control two locations. eg. the instant trigger to control the bonnet and trunk of the car.

Posted By: kevinh30
Date Posted: November 27, 2002 at 3:54 PM

thanks mali, cpgoose, and securinu

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kjh

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