Mazda Miata, Viper 791XV

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=83713
Printed Date: September 13, 2025 at 2:49 AM

Topic: Mazda Miata, Viper 791XV

Posted By: speedcrazy
Subject: Mazda Miata, Viper 791XV
Date Posted: October 04, 2006 at 9:42 PM

Hi Everyone

My name is Leo, I'm new here

I have Mazda Miata with the viper 791xv alarm installed. i have noticed yesterday that when i engage the alarm, its not locking the doors for some reason. it used to do it before posted_image

did i pressed some i shouldn't or some wire got disconnected posted_image

is there any way to reset the system to the default setting or should i go to the alarm guy, let him take a look at it posted_image

Best Regards
Leo

Replies:

Posted By: shaggy12volt
Date Posted: October 04, 2006 at 10:48 PM

what year is your car

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The Shagmaster
1999 Chevy Suburban 15" lift sittn on 22's sets 7'5"
1992 Chevy Astro Van all Bagged out Dubbed THE SUICIDER
Installing for over 18 years Looking for empolyment NOW send PM for resum

Posted By: captainzab
Date Posted: October 04, 2006 at 11:23 PM

01-05 miata

common problem is that the connection is bad at the resistor

i usually [buttend]- [resistor]- [buttend]
sometimes, the resistor wiggle alittle. not sure if this is how your installer did it.

take a look at the lock wire

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Note: You Always Dont Get What You Pay For.

Posted By: speedcrazy
Date Posted: October 04, 2006 at 11:34 PM

my car is 2000

and when i bought it i went to install that alarm

and they also installed the door lock thing, that locks the doors by itself.

Best Regards

Leo

Posted By: captainzab
Date Posted: October 04, 2006 at 11:37 PM

99-00 Miata

my guess is either the relay or the actuator

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Note: You Always Dont Get What You Pay For.

Posted By: shaggy12volt
Date Posted: October 04, 2006 at 11:46 PM

more than likely your resister has come disconected or loose.

if they were a good installer the should have soldered your conections and heat shrinked or tape them up a good you sould always have that resester soldered in line within the lock wire that way it wouldint come loose. if they used but conecters to conect the resister make them fix it and solder it

you must you relays with a 1000ohm resister on the lock wire they probly sold you a 451m for your keyless it could have a blown fuse also i take it it still unlocks but no lock the locking the doors by it self should be being done by the brain. oh does your car lock and unlock with the factory switches?

Power Lock	purple	-	door lock control module
Notes: Lock is negative trigger thru a 1,000 ohm resistor. Unlock is a straight negative trigger. MUST use relays. The door lock control module is under the driver side dash towards the center of the instrument cluster. Also found at the keyless control module behind the glove box, if equipped.
Power Unlock	same as power lock wire

Posted By: speedcrazy
Date Posted: October 05, 2006 at 11:22 AM

when i lock it by myself both doors locking automaticly.....

but it was doing it even before they installed the alarm.

Best Regards

Leo

Posted By: speedcrazy
Date Posted: October 05, 2006 at 3:38 PM

ok

i went to the car got under the wheel
there was a bundle of wires going out from little black box
with a fuse i touched it a bit tight everything up
and its working now
should i look for something special in that bundel?

Best Regards
Leo