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686 alarm and fiat marea

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=51548
Printed Date: May 06, 2025 at 6:02 AM


Topic: 686 alarm and fiat marea

Posted By: lysimachus
Subject: 686 alarm and fiat marea
Date Posted: March 08, 2005 at 3:43 PM

hi

i have 1997 fiat marea which has central locking so i bought giordon 686 alarm kit to add alarm and remote central locking the marea has negative control signal to acctuate door lock/unlock but i tried attaching the two pulse wires from alarm unit to the two pulse leads on the door wiring, nothing happens. the alarm works ok apart from that. anyone help? please.

there are some other wires in the door harness such as two 12volt + one earth and one 4volt+

maybe i need a relay, hope not as i like things simple.




Replies:

Posted By: ywdb
Date Posted: March 08, 2005 at 8:21 PM
Hi;

1997 Fiat marea(UK):
Power lock---lt blue
Power unlock--white
located in 18 way connector A.B.I unit behind the glovebox. Negative pulse.

Giordon 686 alarm has 6 wire use for doorlock/unlock.
But Negative trigger doorlock/unlock system only use 4 wire.
Wiring as below;
orange and ORANGE / black wire---no use.
white wire---connect to vehicle power lock wire.
WHITE/ black wire---connect to vehicle power unlock wire.
yellow and yellow/black wire---connect to grand.

Good luck!



Posted By: lysimachus
Date Posted: March 09, 2005 at 3:59 PM

hi  thanks for your reply

i had alarm on bench tonight and the output looks like two relays , your advice is as i thought but i cant help thinking that the car needs 12volt + signals to operate the lock /unlock. did you asume the marea is negative trigger from my first message or do you know for a fact that it is? should i use protection diodes in the relay line to prevent shorts when using normal key to open close doors?

anyway thanks again




Posted By: ywdb
Date Posted: March 09, 2005 at 6:09 PM
Hi again,

Fiat marea Tech Tips as below;

Make: FIAT Model:MAREA Year:1997
Vehicle Information
+12v Wire: RED
+12v Location: LOCATED ON THE ABI UNIT BEHIND THE
GLOVE BOX
Earth Wire:
Earth Location: Connect to a good chassis earth
Ignition Wire: RED / YELLOW
Ignition Location: AS ABOVE
Indicator 1 Wire: BLUE BLUE/BLACK
Indicator 2 Wire:
Indicator Location: AT THE HAZZARED SWITCH
CDL Lock Wire: BLUE
CDL Unlock Wire: WHITE
CDL Pulse Type: NEG
CDL Location: AT THE ABI UNIT
Starter Immobiliser:
Starter Location: TEST AT THE IGN SWITCH
Fuel Immobiliser: BROWN / WHITE
Fuel Location: 14 WAY PLUG IN THE FUSEBOX
Door Wire: AT THE ABI CONTROL UNIT
Door Location: GREY/GREEN, GREY / YELLOW,
GREY/BLACK, GREY/RED
Boot Wire:
Boot Location: TEST AT THE BOOT LIGHT

Door Trigger:Diode isolate 4 Separate lines



Posted By: lysimachus
Date Posted: March 10, 2005 at 4:07 PM

hi

thanks for the comprehensive information, much appreciated

tommorows big day




Posted By: lysimachus
Date Posted: March 11, 2005 at 3:03 PM

hi

fitted alarm today and i understand now negative pulse. the blue and white wires on the harness are normally at 4volts or thereabouts, they need a quick short to ground and the doors lock and unlock.

the 686 has two relays which if you connect each relay to ground and each wire they pulse respectively.

the relay on the car is confined in the cdl unit (a black pvc box) under the dash behind the glove box.

i was looking for something much more complicated, i just couldnt see the simple truth.


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