how to get resist value

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=45685
Printed Date: May 17, 2025 at 8:02 AM

Topic: how to get resist value

Posted By: egretlanding
Subject: how to get resist value
Date Posted: December 21, 2004 at 11:51 AM

Can any one direct me to maybe a website page explaining how to use a volt meter to get the proper resistance value for single wire doorlocks . I notice more light flash also use resisters also. Been relying on wire info but sometimes they are wrong.

thanks

Replies:

Posted By: thepencil
Date Posted: December 21, 2004 at 12:16 PM

Info.

Single wire diagram

Info.

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Be careful whose advice you buy, but be patient with those who supply it. posted_image

Posted By: auex
Date Posted: December 21, 2004 at 12:58 PM

Cut output to switch. Then take your meter set to resistance and put one lead on the output wire coming from the switch and the other lead on the input of the switch. Hit the button a couple of times or hold, and you will have the resistance of the switch. Or you could just look the values up.

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: kgerry
Date Posted: December 21, 2004 at 3:29 PM

or you could use a resistance learning module like 456L from DEI and remove all guess work

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: muaiad97
Date Posted: December 21, 2004 at 5:12 PM

or take the key and mesure the resistance on the key

Posted By: Velocity Motors
Date Posted: December 21, 2004 at 7:00 PM

egretlanding wrote:

Can any one direct me to maybe a website page explaining how to use a volt meter to get the proper resistance value for single wire doorlocks . I notice more light flash also use resisters also. Been relying on wire info but sometimes they are wrong.
thanks

What vehicle is this for ? We can probably just give you the proper resitance for the lock & unlock along witht he parking lights if we knew the vehicle.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA