300TE Alarm system (Viper 1002) install - PeachParts Mercedes-Benz Forum

ps2cho · #1 03-22-2012, 07:21 PM

Hey guys,

I have a viper 1002 alarm that I want to install for keyless lock/unlock only. I don't need any other features really.

Current factory alarm works great, horn works...everything is good.

I kinda don't know where to start.
I've read all the threads, but most of them are based around those $25 chinese units. What do I need to do make mine work? The manual is chinese to me...I don't know what wires I need.

Any pointers to get me going in the right direction?

JamesDean · #2 03-22-2012, 08:11 PM

I have a thread around here somewhere. I think you might have posted in it too actually. The wiring I used for the late model 126's should work with your 124 too.

The keyless unit I used--Avital--is made by the same company that your Viper unit is--Directed Electronics so wiring should be fairly similar.

EDIT: Here's the thread: Keyless Entry Wiring Key (W126,W123,ETC)

EDIT: Here the wiring for 2nd gen 126 (should be fairly similar to your 124):

Keyless Entry Wiring Key (W126,W123,ETC)

http://i.imgur.com/n5ZSu.png

ps2cho · #3 03-22-2012, 08:23 PM

I gathered from the threads I should be able to make it work using the 4 wires from my harnesses...

On the wiring diagram, I am lost on what wire to use for the unlock/lock. I have 7 wires as shown.

What color wires do I use for it? (1st pic is my ACTUAL harness).

I have the +12v and GND, its just the lock/unlock I need to figure out.

ps2cho · #4 03-22-2012, 11:23 PM

Plugged in the siren, and it beeps when I lock/unlock....but it won't beep like its supposed to when I "enter" the setup mode. I press the valet button for 3sec like the manual says and its supposed to chirp at me to confirm entering setup -- but nothing happens.

Stupid thing. I don't get it.

Here's how I have it though:

JamesDean · #5 03-22-2012, 11:29 PM

Ok Here's what you do:

Tap the indicated wire for always-on power, and the ground for ground.

Pick any one of the blue circled wires, about 6-7" up from the plug on the vacuum pump cut just that wire. You'll be using it to wire into the keyless system

Here's you connection list for the door-harness of the Viper:

JamesDean · #6 03-22-2012, 11:32 PM

Quote:

Originally Posted by ps2cho

Plugged in the siren, and it beeps when I lock/unlock....but it won't beep like its supposed to when I "enter" the setup mode. I press the valet button for 3sec like the manual says and its supposed to chirp at me to confirm entering setup -- but nothing happens.

Stupid thing. I don't get it.

Here's how I have it though:

It kinda looks like you've only got 1/2 the system hooked up. See my above post, see if that helps at all.

ps2cho · #7 03-22-2012, 11:45 PM

Thanks. I'll get those extra wires hooked up and see what happens.

I hope that the missing link why it won't go into setup.

ps2cho · #8 03-25-2012, 03:49 PM

I plugged everything in as stated and still no luck...
On the main harness, all I need is just the +12v constant and ground right?

I also still cannot get it into the learning mode!!! This is so frustrating.
As I said, it chirps when it locks/unlocks, but vacuum pump does not function and no chirps when in the learning mode.

The manual states that H1/Green or H1/Violet must be connected and +12v ignition must be connected, but I am not 100% sure if this is why the learning mode won't engage?
If I connect these up to eliminate this as the problem, where would I connect the H1/Green or Violet to? Manual states H1/Green is door trigger input (-), and H1/Violet is door trigger input (+).

JamesDean · #9 03-25-2012, 04:38 PM

Hmmm when I get a few minutes I'll sit down with your manual and write up a full connection guide for the Viper.

ps2cho · #10 03-25-2012, 04:55 PM

I should be able to confirm it once if I can find where the (-) door trigger wire is? That's all I am missing...

Can I use any of the wires from the 3pin round plug?

JamesDean · #11 03-25-2012, 05:29 PM

The door trigger wire would be any one of these wires circled in blue:
http://i.imgur.com/5MjxM.png

ps2cho · #12 03-25-2012, 06:11 PM

hooked it up to yellow (trunk) and put +12v ignition, followed the steps in the manual (open door (tried both trunk+driver door), then ignition ON then off, then hold valet button for 3 seconds and the siren should chirp to acknowledge menu mode activated) and it doesn't chirp for menu. It obviously won't work in 0.8sec delay mode that is the factory setting, I have to change it to 3.5sec, but I can't do that when it won't let me get into the menu.

There is no technical support for Viper unless I wanna pay basically.

Maybe I should just go get one of those chinese ones for $15 and be done with it.

JamesDean · #13 03-25-2012, 06:43 PM

You could get the one that I used in my thread in post 2.

I've never had to change any settings for delays or anything when I installed the one in my 201. The 300SD install I did used an electric door actuator.

I should finish up that guide for the viper in a bit here or so.

ps2cho · #14 04-05-2012, 10:42 PM

I haven't done anything since earlier last week when I installed what I could...Noticed today that UNLOCK works!!! It seems that its only lock that is not working. I guess I did not notice this before.
Have not entered the learning mode at all or anything like that. Still factory settings.
Any ideas why lock won't work?

Alarm is working otherwise...When I manually unlock the car, then lock the Unit (does not lock the factory system), then close the door, the unit's alarm goes off....so it seems everything is functional, minus lock.

Ideas?

cypress · #15 04-05-2012, 11:21 PM

Have no idea how you hooked it up....
But this is much more clearer how it should be connected, ignore the wiring colors, go with the lock/unlock relay pin#s on the dwg. instead.

You need to go into setup in your unit for 3 second delay.

EDIT: Don't forget to cut the wire between pin 87 (lock) & pin 87 (unlock) relays.