is it possible, unplug alarm and use car?
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=117802
Printed Date: May 15, 2025 at 9:09 PM
Topic: is it possible, unplug alarm and use car?
Posted By: jcaz22
Subject: is it possible, unplug alarm and use car?
Date Posted: November 17, 2009 at 12:09 PM
I got a '92 Lexus SC300 and it has a Viper 560xv alarm system, which I haven't been using due to the remote being lost. The other night the alarm started to unlock and lock by itself, after 3 hours of this going on I got fed up with it so I pop the hood and simply cut the alarm horn off so it can at least be quiet for the night. Unfortunately at the moment I don't have the cash to get an electrician to remove the alarm system. I took a look at the alarm box and saw all these different plugs connected to it that run wires through out the car but since I don't have a clue on installing or uninstalling alarm systems I haven't done anything else other than cutting the alarm horn off. So the reason for this post is the following question. Is it possible for me to unplug the wires from the alarm box and leave it as is and still be able to turn the car on as well as locking it?
Replies:
Posted By: howie ll
Date Posted: November 17, 2009 at 12:22 PM
You will have two boxes, one has thicker green and purple wires. Join these two together then remove the boxes. How do you know it's not a car rather than alarm problem? I recently had to remove the factory central locking fuse from a 5 year old Toyota with the same problem.
Posted By: jcaz22
Date Posted: November 17, 2009 at 12:42 PM
Thanks for your reply, the reason why i think is the alarm is because I had a problem with it couple of months ago and took it to pep boys they said something like the alarm was pulling too much juice from the battery. But they did say to take it to an electrician and have it checked out but I haven't got around to it.
I did see another box by it, it says something like relay satellite or something, did you mean that? So I take the plugs from the alarm off and connect to that box? Sorry but I am new to this and if I had the funds I wouldn't be trying to do this on my own
Posted By: oldspark
Date Posted: November 17, 2009 at 5:29 PM
It sounds like it could be a low voltage issue with the battery. (A voltage fluctuation between two levels that cause switching, or undervoltage that puts circuits or processors in indeterminant states?)
And I presume a "satellite" siren still means a siren with its own battery, usually wired as "failsafe" so that if alarms are defeated or wires cut, it cannot be turned off?
But I bow to Howie's expertise here....
Posted By: howie ll
Date Posted: November 17, 2009 at 5:46 PM
My expertise is in getting called out to remove (or get the car going) when an alarm or aftermarket immobiliser is giving grief after 4-5 years. In about 70% (rising to 90% in the winter) it's the car battery/charging system that's the problem. People think they have sealed batteries when they don't, over here in the UK as far as I remember, it's only Vauxhall and Toyota, they never check the levels anymore and come the first cold snap with 50% extra load, bendy bendy goes a plate and that's it. 12.3 volts and slow to charge. A nice few journeys in an out of Central London, jammed up and crawling with HRW , wipers etc and goodbye battery. How many people idle their cars for a minute especially in winter to to let the oil circulate and it's pressure to level?
Posted By: i am an idiot
Date Posted: November 17, 2009 at 7:13 PM
jcaz22 wrote:
I did see another box by it, it says something like relay satellite or something, did you mean that? So I take the plugs from the alarm off and connect to that box? Sorry but I am new to this and if I had the funds I wouldn't be trying to do this on my own
I rhink Howie is directing you to the starter kill wires. I have no idea if they are attached to the alarm itself or to the external relay box. Look for 2 wires that are larger in size than the other wires of the alarm system. They will be Blue and Green. Follow these 2 wires and notice if they are both connected to the same color wire coming from the vehicle. When a starter kill is installed on your vehicle, the starter wire is cut, one end is connected to the Blue wire of the alarm, the other end of the starter wire is going to be connected to the Green wire. You must reconnect the vehicle's start wire back together. Just cut the Green and Blue wires far enough back so you can just connect green to blue.
Posted By: jcaz22
Date Posted: November 17, 2009 at 10:46 PM
Thanks for your help and input guys, I've been reading things over and over to get a good understanding since this is my first time in my life messing with any type of wiring on a car. I had a pretty busy day didnt get around to mess with my car. I'll be taking another crack at it tomorrow if possible, hope you guys are around.
Posted By: howie ll
Date Posted: November 18, 2009 at 2:05 AM
There are TWO boxes, joined by a ribbon cable. The two wires refered to by Mr. I are GREEN and PURPLE (VIOLET) NOT blue all others may be safely unplugged, and remove the fuses if you can find them; BUT if you unplug and the car fails to start, join the green and purple together. I have a DEI sat relay box in my "aquired" *collection. If jcaz would like to pm me with his email address, I'll be glad to photo it and send him the pic of what he's looking for. *Funny how we collect things, they never sold it in the UK, I kept it for the day I'd need something with multiple relays!
Posted By: i am an idiot
Date Posted: November 18, 2009 at 5:41 AM
Yeah like Howie said, green and purple.
Posted By: Chris Luongo
Date Posted: November 18, 2009 at 10:11 AM
1. If you go under the dash and find the main "brain," which should actually have the 560xv part number printed on it...
As long as it's a "regular" installation with the starter kill circuit connected in the usual way, simply unplugging all connectors from the "560xv" module should make the alarm completely non-functional, and the car should behave as if it never had an alarm.
2. However, you're still relying on the quality (or lack thereof) of the original installation.
Probably, everything will be just fine forever.
But, if for example the original connections to the starter kill relay should come loose, the car wouldn't start. If the tape were to fall off the parking light wire, you'd blow a fuse every time you turn on your lights.
If you have no plans to re-use the alarm or buy a replacement remote, it might be a good idea to do a complete removal, whether you do it yourself or pay an installer to do it.
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