'87 300E Benz, 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=33162
Printed Date: November 04, 2025 at 2:06 AM

Topic: '87 300E Benz, Viper 791xv

Posted By: MBZ oe
Subject: '87 300E Benz, Viper 791xv
Date Posted: June 02, 2004 at 11:30 AM

Hey. I am going to install a Viper 791xv in my 87 300E Benz and need some help.

First, do I need any extra relays to make my vacuum door locks work? Or can I just hook it up to the electric vacuum pump which opens all locks including trunk.

Second, how do I deal with the factory anti theft system?

Third, are there any other sensors that I need to order to make it "extra secure"?

Last, is there anyone, especially in the bay area that I could call if I need some help?

Thanks

I have never installed an alarm but have completely restored this car so I know how to get to everything and where everything is. I have wiring diagrams for my car as well.

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Replies:

Posted By: MBZ oe
Date Posted: June 02, 2004 at 11:32 AM

I forgat to add that I will not be hooking up the remote start. I don't want that.

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Posted By: onlyremotes
Date Posted: June 03, 2004 at 8:38 AM

you need a 451M module to work the vacuum locks. You can call 407-870-8889 and I can also email you wiring diagram for your vehicle

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Walton Guerrero-Installer/Distributor
Alltech Electronics,Inc
3732 Grissom Lane
Kissimmee, Florida 34741
autotechs.com onlyremotes.com
1-888-252-8324
"Always check your wires with a multimeter"

Posted By: deviousjoker
Date Posted: June 03, 2004 at 9:05 AM

I would just use the 451m relay pack with the system.

as far as your door locks go.

GREEN/ black and BROWN / black are tied together(lock relay 30, unlock relay 87a)

WHITE/ black goes to the switch side(lock relay 87a)

blue/black goes to the motor side(unlock relay 30)

purple goes to 12v(unlock relay 87)

PURPLE / black goes to ground(lock relay 87)

ground to 86

12v to 85

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First Class MECP Installer

Posted By: onlyremotes
Date Posted: June 03, 2004 at 9:18 AM

deviousjoker, please check your 451M config. What is needed is type E 451M config

MERCEDES BENZ, 300 E, 1987, Power Lock

Blue wire located in 1/4* blk rubber tube with RED / wht and brown wires coming out of drivers door. Passenger side same except trigger wire is green. Pump located under rear seat on passenger side.

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Walton Guerrero-Installer/Distributor
Alltech Electronics,Inc
3732 Grissom Lane
Kissimmee, Florida 34741
autotechs.com onlyremotes.com
1-888-252-8324
"Always check your wires with a multimeter"

Posted By: MBZ oe
Date Posted: June 03, 2004 at 5:27 PM

Thanks guys. So what is the type E config?

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Posted By: deviousjoker
Date Posted: June 04, 2004 at 1:48 PM

this is a type E config.

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First Class MECP Installer

Posted By: MBZ oe
Date Posted: June 08, 2004 at 2:08 PM

I found this in a previous thread. Is it how you make a 451m relay pack?

Also, I haven't received the alarm yet so I haven't read the instructions yet. Does the relay pack come with the 791xv?

https://www.the12volt.com/images/vacuumlocks.gif

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Posted By: profuse007
Date Posted: June 08, 2004 at 5:42 PM

no it doesnt. if you check out viper.com and its install manual, itll tell you diff way of how to wire diff locks.

that link should work, too.

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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).

Posted By: MBZ oe
Date Posted: June 09, 2004 at 7:38 PM

I decided on on the Clifford Matrix 3.5 today. My local shop gave it to me for $320 with a single zone proximity sensor. It seems that since it came with the 451m relay pack, that I won't need anything else. Right? I just bought a dig multimeter so I will start on it tonight.

What do you folks think about the matrix 3.5?

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