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Viper 791XV

Responder 2-way LCD & Remote Start Alarm

Discontinued
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This item has been discontinued

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  • 2-Way Security & Remote Start System
  • Remote Start Convenience
  • New Style 2-way Transceiver With Responder Technology
  • Virtually instant confirmation of Remote Start
  • Dedicated (*) one-button start
  • Turbo-timer Built-in
  • Defroster activation output
  • Safety Shut-down
  • Timer Mode
  • Complete Engine Monitoring
  • Anti-Grid
  • New Miniature eXtreme Capacity Relay Satellite
  • Tach/Voltage Checking
  • 1-year SonicElectronix.com warranty

General Features

Security System Type
This indicates whether the product is a security car alarm product, remote start module, or a combo unit that offers security with remote start features.

Security: This means that the car alarm system is just that. No bells and whistles, just a car alarm system.

Remote Start: when installed, this allows the user to start a vehicle from a remote location. Remote start modules and security with remote start alarms often require an additional vehicle specific bypass module to complete installation.

Security with Remote Start: This means that the system incorporates both features listed above.

Car Alarm
If "Yes", the system will have alarm security features to help prevent vehicle theft and tampering. Remote start modules without alarm features will have "No" for this value.
Remote Start
If the alarm or remote start module has "Yes" for this value then the system has an electronic device that allows you to start your vehicle by remote control without actually being inside the vehicle or using the key. The remote start system supplies the vehicle with power and simulates a start just as if you were inside using the key. Select vehicles require additional accessories or immobilizer/bypass modules to use the remote start feature.
Yes
Keyless Entry
Keyless entry allows you to remotely lock, unlock, and open the trunk of a vehicle if that is equipped with power door lock motors (actuators) and power truck motor (solenoid). Door lock controls via the remote are found on nearly all of today's car alarms.
No
2-way Paging
Alarms with 2-way paging inform the user via remote vibrating/audible/visual alert when the alarm is triggered. The pager must be within range to receive the transmitted signal.
Yes
Number of Remotes
The number of remotes included with the alarm system purchase.
1
Number of Buttons on Primary Remote
The amount of buttons on the Primary Remote generally equals the number of functions that you can use your remote for. Some remotes have auxiliary buttons which can perform more than one task per button.
4
Main Transmitter Type
LCD and OLED transmitters display various screen savers, warnings, alerts and other features on the face of the remote, rather than first generation button-only transmitters. They provide more information typically and other features.
Sidekick Remote Transmitter Type
Some car alarms and remote start systems come with more than 1 transmitter, which is referred to as the "sidekick" transmitter. Most LCD/OLED systems come with a button-only sidekick transmitter, while select units come with an additional LCD/OLED transmitter.
Smartphone Compatibility
These are the types of smartphone systems that the car alarm system is compatible with.
GPS Tracking
These car alarms enable a user to track the position of the vehicle using GPS satellites.
Professional Installation Recommended
This will indicate whether or not we recommend going to a professional installer for this item. Some items have complex installations that should only be done be professional certified installers.
Built-in Bypass Module
System Type
This refers to the type of remote start system, whether it is an add-on or a complete kit.

Convenient Features

Panic Mode
Panic mode allow the user to be able to set off the alarm from the remote.
Yes
Valet Mode
Valet mode is a car alarm setting that adjusts system to less sensitive settings when allowing a valet to park your car and similar settings.
Yes

Alarm Features

Number of Car Alarm Channels
The total number of channels that the car alarm system supports. These channels can include locking and unlocking doors, opening the trunk, remote start, and many other options.
6
Siren
Most car alarms come with a siren that can be installed. The siren will sound when the car alarm is triggered the alarm goes off.
Yes
Shock Sensor
The shock sensor is designed to trigger an alarm on light or heavy impacts and vibrations (standard sensor included with most alarms).

A dual zone shock sensor is a feature of proximity and shock sensors only. Zone 1 ( light impact on shock sensor and short motions(adjustable) on proximity sensor) will trigger warn away chirp to warn intruder that car has an alarm without setting off the full alarm. Zone 2 (heavy impact on shock sensor and extended motions(adjustable) on proximity sensor) will trigger the alarm to “go off”.

No

Two-Way Paging Features

Interior Thermometer
Some of the higher end car alarm systems are able to detect the temperature of the cabin. The temperature can then be displayed on the remote.
No

Remote Start Features

Cold Start Timer
Great for those on a set schedule who need their vehicle to warm up at a specific time every morning for example.
No
Turbo Timer
Some remote start systems have turbo timer feature which allows the vehicle to run for a specified amount of time after exiting vehicle. In turbocharged vehicles this prevents hot oil in the engine from choking up in the lines. Hard driving can raise engine oil temperatures to dangerously high levels. Proper cool down is essential for a healthy turbo and engine.
Yes
Compatible with Diesel Engines
This means that the remote start system will work with diesel engines.
Engine Start Intervals
Some remote start systems offer feature to protect your engine. The engine start interval feature will start the car at particular time intervals or when the engine has reached a certain temperature. This feature prevents the engine block from freezing.
Compatible with Manual Transmissions
This means that the remote start car alarm is compatible with manual transmissions. Please see the item description, manual, or your professional installer for more information as to how this feature will work with your specific vehicle.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
88%
4 Star
13%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.9
Features
4.9
Design
4.8
Usability
4.7

levi

tampa, FL

Overall
Durability
Value
Features
Design
Usability

the best

September 25, 2008

i got this and haven't had any problem with at all i have had two other ones but i feel like i want need any other one after this everything works good and the price was grate anytime i need anything for my car i will be getting it from sonic

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Matt

Castle Rock, CO

Overall
Durability
Value
Features
Design
Usability

Tight!!!

April 10, 2008

This alarm is by far the sweetest alarm system I have ever owned. With the system inside my car being so expensive, I didn't trust the stock alarm at all. Upgrading to this alarm has stopped me from being so paranoid. If you have a crazy sound system in your car and want a great alarm to protect it, this is the perfect alarm for you.

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Stephen

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability

Viper 791xv

April 18, 2006

My friend has this alarm in his car, and I recently purchased one to install in mine. This alarm is ridiculous! No other alarm in the market can honestly match up to this one. It comes with everything you need in the box, has the coolest lcd pager out, and has more functions than you could imagine. If you are going to get an alarm do no go cheap, because you get what you pay for, and if you go cheap on your alarm then your car or your stereo inside your car WILL get stolen. This alarm is the BEST!

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Matthew

Fontana, CA

Overall
Durability
Value
Features
Design
Usability

It's an alright alarm.

February 25, 2006

I thought this alarm was alright. I think this alarm is more for looks then protection. I did not think the alarm was very loud. My cliford alarm on my prelude is very loud. The LCD screen on the remote is very nice and I love the fact that the alarm alerts me if somebodys breaking into my car. I thought the alarm was great but I think the the arlarm could have been louder.

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Jake

Lansdale, PA

Overall
Durability
Value
Features
Design
Usability

Awesome Product.

February 17, 2006

I had this in my car after the driver side lock went on me. I needed keyless and i figured.... hey, why not?? so i went with this and i was blown away. Unfortunately i had to sell the car. But trust me, i will be getting another one of these to go in my new 99 accord coupe, especially after it got broken into just months after getting it! AMAZING PRICE TOO!! this thing sells for like $510 at b*** b**. Only problem i ever had was with the LCD getting scratched up, which was because i had it hanging from my belt loop to show it off haha.

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Jesus

Los Angeles, CA

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Durability
Value
Features
Design
Usability

Will change your life!

January 17, 2006

This is an awesome unit. I took it upon myself to install the Viper 791XV. With my 1994 Nissan Altima SE the unit works great and using online wiring diagrams make installation a breeze. With the unit I also bought DEI trunk release solenoid which shows you how much this unit can be expanded. Not only does the unit offer many features it's as easy to use as any normal security system, with the added range of course. As I said, Remote start "will change your life." Remote starting your car on early morning allows you to come out to a warm car, windows defrosted, and ready to go. Even on a hot summer day, Remote starting the car with the a/c on will only bring a large smile to your face. I recommend this unit to those who want only the best.

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Edgar

Oxnard, CA

Overall
Durability
Value
Features
Design
Usability

Viper!

January 11, 2006

The viper 791xv is a great buy. I got this for my chevy and its been what I expected. The remote start works great and the Responder romote has good range. I was thinking of just gettin a plain alarm but when I saw the viper791xv on sonicelectronix it changed my mind. This alarm/remote start system is worth the money.

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Leif

Denver, CO

Overall
Durability
Value
Features
Design
Usability

Vipers Best Alarm

December 2, 2005

The 2 way transmitter keeps me informed on the status of my vehicle at all times. The remote start is great for warming up my car in the mornings. With this alarm, even if you are out of transmitter range (up to 1/2 mile!) and someone tries to break in or steal your car, it will NOT start.

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Josh

Plant City, FL

Overall
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Value
Features
Design
Usability

Peace of mind all the time

October 1, 2005

This alarm is great. I have had it for about a month now, cost about 200 to get it installed on my Grand Prix GTP after getting broken into before. Well this nifty gadget gets transmissions from my car every three seconds so I know everythings gonna be fine when I get to my car. The remote start works great and the alarm never needlessly goes off, like others around loud systems and loud exhaust. Buy it before you get broken into, it is one of the worst feelings you can think of and it happens when you least expect it!

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Greg

Rosemount, MN

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Value
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Usability

Great security

August 12, 2005

Buddy has this security set up with all the gadgets too. He can leave his windows down and if people reach inside the alarm goes off. The remote start works great especially here in MN. If you purchase a new vehicle just take it out and install it in the new one. All in all the products works great and looks cool all at the same time

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Keval

Deer Park, NY

Overall
Durability
Value
Features
Design
Usability

viper 791xv

August 10, 2005

this product is actually better comparing to python and this one is easy to use an the range for the 2 way responder is better than actually what python got because my dad has python on his x5 and me myself got the viper becaue i found a really good deal on this website so its not just the pric its also the product this one isss beeter than python , i am comparing this to python beacus these two are the onli ones you would want to get when it come wo two way responder and lcd

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Adam

Gainesville, FL

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Durability
Value
Features
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Usability

Best out there

July 26, 2005

I have had this alarm for over a year and love it. It is easy to expand and the 2 way remote lets you know the status of your car. I am actually thinking about putting this alarm in my parents and brother's car.

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Big

Taylor, MI

Overall
Durability
Value
Features
Design
Usability

Viper 791xv lcd 2way alarm & remote start

April 5, 2005

purchased this from sonicelectronix.com alittle while ago and just had it installed 3 days ago. this thing is pimp! definitely recommended!

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Mark

New Orleans, LA

Overall
Durability
Value
Features
Design
Usability

Alarm

April 3, 2005

My brother owned this alarm. He bought it from a local retailer and had them install it. It worked well throughout the time he owned his car. No problems at all.

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Jonathan

North Highlands, CA

Overall
Durability
Value
Features
Design
Usability

Viper

March 6, 2005

i got this great alarm after my other one didn't work. the viper one works well and almost every one puts them in. protects my dodge ram hemi sport very well...and the blue led looks alot better then that red.

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Trevor

Lawrenceville, GA

Overall
Durability
Value
Features
Design
Usability

Works

March 4, 2005

this item works great, had for a year no problems

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Accessory Tools and Products

Accessories added

Multimeter

Home and Auto Digital Multimeter

Your Price $17.99

Soldering Iron

Soldering Iron with Ceramic Heater

Your Price $14.99

Wire Stripper

Heavy Duty Wire Stripper & Cutter

Your Price $11.99

Wire Crimper

2 in 1 Wire Quick Splice T-Tap Crimper and Wire Cutter

Your Price $14.99

Solder

1mm All Purpose Solder

Your Price $8.99

T-Tap Connectors

22/18 Gauge T-Taps

Your Price $5.99

Relays

Single Pole, Double Throw 20/40 Amp Relay

Your Price $2.99

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Product Summary

Manufacturer

Model Number

791XV

UPC

093207564222

Weight

4.00lbs

Internal SKU

viper791xv

Internal Product ID

1590

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Viper 791XV