andy_tech
19-11-2004, 01:37
I have modified the wiring (cut one wire) on mine to improve security.
Can be done instead of, or as well as mechanically delocking with lock blanking plate.
When done aswell as mechanically delocking this improves security further.
If done without delocking - as like me, can't be bothered painting blanking caps and are worried about getting in when remote battery goes flat or other electrical fault.
After modification (cutting wires) :
Can still lock normally from key lock.
Also can still unlock mechanically with the key, but does not activate central un-locking (and eliminates the other problem), and alarm goes off if door is opened - useful if remote key batteries go flat.
Remote operation is not affected and works as normal.
I did this on a Seat Toledo (year 1999) which uses the same controllers as VW Golf. I used the Golf wiring diagram.
Wiring colours or controller units may be different (depending on the year), so double check you have the correct wire before cutting.
Instructions :
Probably best to disconnect the battery first.
http://www.btinternet.com/~a_hutton/cut_wiring/int_handle.jpg
Screws in door handle with cover unclipped
Take the inner door panel off - the cover of the interior handle pulls off, it is held in place by clips - then there are 2 retaining screws behind. There are also 2 screws at the bottom edge of the door panel.
The door panel should then pull off - it is held by clips.
Lift the panel up slightly to clear locking knob and carefully pull out, there are several wires attached.
Unplug all the wires (hold plastic latch down on connector to release and pull out)- (speaker, door light, switches, alarm LED) and unclip the door latch cable.
http://www.btinternet.com/~a_hutton/cut_wiring/controller.jpg
Electric window motor and controller unit
The controller unit is attached to the electric window motor - the wires from the lock unit connect to here.
On mine the driver side controller/window motor was part number : 1J2 959 802 C. If you have the same controller the pin numbers below will be correct (if not the wire colours).
On the multiway plug there is a plastic latch at the bottom, this pulls down and releases the plug.
On the multiway plug the pin numbers are marked (very small moulded into the plastic).
Pin 29 - Brown/Blue stripe wire - Ground to the lock unit.
Pin 4 - Yellow/Green stripe (or VW Golf - Green/Red stripe) wire - Key unlock switch in lock unit.
(The thicker wires are the power supply make sure not to cut these)
Check with a multimeter to check you have the correct wires - the Yellow/Green (unlock switch) wire is connected to the Brown/Blue (ground wire) when a key is turned in the lock to unlock.
If this is OK then cut the Yellow/Green wire connected to pin 4, leaving enough to insulate both ends (heatshrink tubing or insulation tape).
http://www.btinternet.com/~a_hutton/cut_wiring/drivers2_5_seat_sml.gif
Put multiway plug in position on controller and push the latch up to secure.
Refit the other connectors and the door latch cable, refit door panel.
Passenger side
Passenger side is similar, but controller unit is different (part number : 1J2 959 801 D), and different pin numbers are used.
Pin 28 - Brown/Blue stripe wire - Ground to the lock unit.
Pin 3 - Yellow/Green stripe (or VW Golf - Violet/Green stripe) wire - Key unlock switch in lock unit
Check with multimeter this is the correct wire then cut the Yellow/Green wire connected to pin 3.
http://www.btinternet.com/~a_hutton/cut_wiring/pass2_5_seat_sml.gif
Word version of instructions (right click and save as) (http://www.btinternet.com/~a_hutton/cut_wiring/cut_wiring.doc)
Can be done instead of, or as well as mechanically delocking with lock blanking plate.
When done aswell as mechanically delocking this improves security further.
If done without delocking - as like me, can't be bothered painting blanking caps and are worried about getting in when remote battery goes flat or other electrical fault.
After modification (cutting wires) :
Can still lock normally from key lock.
Also can still unlock mechanically with the key, but does not activate central un-locking (and eliminates the other problem), and alarm goes off if door is opened - useful if remote key batteries go flat.
Remote operation is not affected and works as normal.
I did this on a Seat Toledo (year 1999) which uses the same controllers as VW Golf. I used the Golf wiring diagram.
Wiring colours or controller units may be different (depending on the year), so double check you have the correct wire before cutting.
Instructions :
Probably best to disconnect the battery first.
http://www.btinternet.com/~a_hutton/cut_wiring/int_handle.jpg
Screws in door handle with cover unclipped
Take the inner door panel off - the cover of the interior handle pulls off, it is held in place by clips - then there are 2 retaining screws behind. There are also 2 screws at the bottom edge of the door panel.
The door panel should then pull off - it is held by clips.
Lift the panel up slightly to clear locking knob and carefully pull out, there are several wires attached.
Unplug all the wires (hold plastic latch down on connector to release and pull out)- (speaker, door light, switches, alarm LED) and unclip the door latch cable.
http://www.btinternet.com/~a_hutton/cut_wiring/controller.jpg
Electric window motor and controller unit
The controller unit is attached to the electric window motor - the wires from the lock unit connect to here.
On mine the driver side controller/window motor was part number : 1J2 959 802 C. If you have the same controller the pin numbers below will be correct (if not the wire colours).
On the multiway plug there is a plastic latch at the bottom, this pulls down and releases the plug.
On the multiway plug the pin numbers are marked (very small moulded into the plastic).
Pin 29 - Brown/Blue stripe wire - Ground to the lock unit.
Pin 4 - Yellow/Green stripe (or VW Golf - Green/Red stripe) wire - Key unlock switch in lock unit.
(The thicker wires are the power supply make sure not to cut these)
Check with a multimeter to check you have the correct wires - the Yellow/Green (unlock switch) wire is connected to the Brown/Blue (ground wire) when a key is turned in the lock to unlock.
If this is OK then cut the Yellow/Green wire connected to pin 4, leaving enough to insulate both ends (heatshrink tubing or insulation tape).
http://www.btinternet.com/~a_hutton/cut_wiring/drivers2_5_seat_sml.gif
Put multiway plug in position on controller and push the latch up to secure.
Refit the other connectors and the door latch cable, refit door panel.
Passenger side
Passenger side is similar, but controller unit is different (part number : 1J2 959 801 D), and different pin numbers are used.
Pin 28 - Brown/Blue stripe wire - Ground to the lock unit.
Pin 3 - Yellow/Green stripe (or VW Golf - Violet/Green stripe) wire - Key unlock switch in lock unit
Check with multimeter this is the correct wire then cut the Yellow/Green wire connected to pin 3.
http://www.btinternet.com/~a_hutton/cut_wiring/pass2_5_seat_sml.gif
Word version of instructions (right click and save as) (http://www.btinternet.com/~a_hutton/cut_wiring/cut_wiring.doc)