Type B door lock wires diode isolation

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=139343
Printed Date: April 28, 2024 at 6:26 PM

Topic: Type B door lock wires diode isolation

Posted By: jaxzin
Subject: Type B door lock wires diode isolation
Date Posted: August 23, 2015 at 8:31 AM

Going to be installing a Viper 350 plus alarm into a mitsubishi Endeavor and the door lock and unlock system is typeB. Just needs a negative pulse to control them.

What I dont want is the reversing action of the door lock wires to backfeed +12V into the mitsubishi ETACS computer.

Will I be safe to use some diodes to pass the negative to the car harness and block the +12V without damaging my Viper alarm module?

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Replies:

Posted By: howie ll
Date Posted: August 23, 2015 at 9:23 AM

Yes used to be standard procedure on earlier flip-flop driven models such as the above, 5901 etc.
If anything it will protect rather than harm your 350.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Posted By: jaxzin
Date Posted: August 24, 2015 at 3:47 AM

Thanks. I got some 1N4001's at home I can use. Would these be sufficient?

Posted By: howie ll
Date Posted: August 24, 2015 at 3:55 AM

For this yes. The pink inverse won't be more than 24 volts.

-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

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