Hi all,

I am fitting an alarm in my Octavia 2.0 Petrol Yr: 2000

Was trying to find out a wire to connect the lock/unlock signal from my remote to. I connected it to the wires found in the driver side switches in the door. But after all, found out that it can not be double locked (the original remote double locks the doors remotely, but when you press the button from inside the car, on the door switches, the car is not double locked) . So hence now I need to find the wire that sends the signal to double lock the doors when the lock button is pressed on the original remote.

Does any one know where the Central convenience control unit / ECU is located please?

Does any one know where I am likely to find this wire / signal that double locks the doors please?

Also does any one know how to link the two systems together, so I can enable my alarm from the original remote (this one is not that critical )

many thanks for your time and help.

Bond.........Gamez Bond

You need to connect to the three wires for the tail gate key (I did) on some models you need a 180 ohm resistor for the unlock signal.

The lock wire is WHT/BLU and Unlock is BLK/BLU, the brown is ground.

Many thanks Air-Mech.

OK, I finally got it done last night

Here is what I did. Please follow these instructions for OCTAVIA as I am not sure if Fabia etc follow the same colours and pin numbers etc. Mine is a 2.0 petrol Model engine code AQY. year 2000 (X-reg).

you will have to take off the driver side foot well bottom fascias/cover. Be careful not to damage anything.

Also separate the fuse box from this fascia by undoing the two screws that hold the fuse box to the fascia. Then unplug all connectors including the light switch, light adjustment switch, and the OBD diagnostics connector at the bottom. For this please follow the excellent instructions written and attached by JonBoy ( Many thanks mate).

You can then undo the two screws holding the Central Convenience Module (CCM) which is located just under the speedo. It is a black colour box with two set of connectors in my case and you will find it if you look upwards from the drivers footwell.

Alarm Central Unit position: positioned behind the central console, towards the driver side. I found a nice little gap there, perfect for the alarm centre module.

Power Supply to the alarm (+ve input): If you take off the plastic covers in the drivers footwell, you will see a set of relays there. One of them says +30 and has a nice bolt and nut there, I connected the alarm power supply +ve wire here. An alternative is the RED/WHITE wire going to the pin 22 of the Central Convenience Module (CCM).

Ground supply to the alarm (input): I connected the ground supply to one of the two screws that hold the Central Convenience Module (CCM). The CCM is also referred to as ZV or ZM module in some of the references I saw. Alternative is to connect to the BROWN wire at the pin 23 of the CCM module.

Ignition Wire (input): I personally connected to the first relay starting from the left. I think its marked 70 or 73 or 74 ( Please let me know if any one needs me to check this if you dont find it). When checking with a multimeter, this will show +12V when ignition is turned ON. An alternative is to connect to the BLACK/WHITE wire at pin 5 or YELLOW/RED wire at position 3 of the CCM module.

Direction Indicators(Output):Connect to the BLACK/WHITE and BLACK/GREEN wires in the 2nd connector on the CCM module. An alternative is to connect to the same colour wires directly at the back of the Hazard Light switch. This switch can be prised out by using a thin flat blade screw driver carefully so not to mark the plastics around it. The Skoda badge around the hazard light switch has to come out first, and has four clips that can easily be prised off. They are locxated on the left and right side of the Octavia badge (2 each side). Then the switch itself can also be prised off using the same method.

Doors Open Switch (input):Connected to BLUE/BROWN wire at pin 13 of the CCM main connector. An alternative is to connect to the BROWN/BLUE wire (I am a little unsure of the colours on this one so please check with a multimter) going to the interior light. This wire can be found in the driver side pillar A. Becareful when taking the plastic cover off the pillar. Start pulling the cover from the top and pull in parallel direction to the wind screen. when you reach the bottom, dont pull, it just lifts off.

Boot Open Switch (input): Connect to the BROWN/BLACK wire at pin 15 of the CCM module. Alternative is to check and connect at the boot light.

Now comes the part I spent most time on (3 evenings):

Central Door Locking Connections (output): The Octavia has a Negative Signal Controlled Locking type 2 (Thanks JonBoy).

For this one I had to take the door trim/cover (not the waterproof membrane) off completely. Before you take the door trim off prise off the tweeter cover. It comes off easily when carefully using a flat head screw driver. Take care not to break any of the two plastic legs/pins. (let me know if you need more info about how to take the door trim off)

Once the door cover is off, look for a bunch of wires going to the actual door lock motor. The motor is located towards the external door open handle. These wires travel from the front end of the door to the door lock motor. Follow this bunch of wires and open the waterproof membrane carefully from the top, almost in the middle of the door, near where the internal door open handle goes normally. If you can get hold of double sided tape, then you can use that when you need to close the membrane at the end of this procedure. Once you have access to this bunch of wires coming directly from the door lock motor, undo a little bit of the cloth tape around the wires. Now look for WHITE/YELLOW (for locking) and BLACK/YELLOW (for unlocking). Now I routed two wires starting from inside the vehicle in the drivers footwell. I took off the bottom plastic cover around the Bonet Open Handle. This comes off by first taking off a small rectangular cover using a flat head small screw driver at the bottom of this cover. You will see two screws behind this small cover. Undo them both. Then undo the top two screws near the Bonet open handle and the cover will come off. Then route two wires from this end, through the rubber gaitor/cover and then into the door. I prefer to use a white and a black wire to remember in case I forget. You might have to take off one end of the rubber gaitor to feed the wires into the door. Fitting the rubber cover can be a bit fiddly, but I got it done after fiddling for about 5 minutes. Make sure that it is seated properly to make a good seal and that the creases on this rubber cover don