You fit this at your own risk, also
First print off the attached sketches it will make it easier to follow the instructions.
All the parts can be bought from Maplins, I have included their order codes below.
PARTS LIST. Order code
1 x 12v relay N08AW
1 x 4.7K Resistor M4K7
3 x Diodes 1N4007 QL79U D1 - 3
1 x Diode 1N5408 QL87U D4
1 x Transistor QQ14Q BC547 TR1
1 x Transistor N56AC BC635 TR2
1 x Fuse Holder DA61R
1 x Fuse GJ83E
1 x Box SC79L
Total cost less than Ł10.
Build the circuit shown in "New Control Circuit" or get some one to build it for you. Use the colours for the wires as I have shown, this will make it easier when you come to wire the unit into the car.
The green wire needs to be about 1 mtr long the rest of the wires 300mm.
I built the circuit into a small box which I fitted under the mirror/window switch using Velcro to attach it to the door panel.
You should end up with 6 wires coming out of the unit, brown, white, red, blue, black and green.
The diodes D1, D2 and the fuse protect the car electronics in the event of TR1 or TR2 going short circuit.
Remove the door panel, how to do this is mentioned in other threads on this forum so I won't detail that here.
Remove the two plugs from the Mirror/Window control switches. The smaller one is for the mirrors, The larger one is for the windows as shown on the diagrams.
On the smaller plug (mirrors) cut the wires to pins 2 (white) 7 (light blue) and 8 (red), leave a couple of inches sticking out from the plug as you will be connecting to these.
Take the diode D4 1n5408 and solder the end with the white band to the free wire on pin 2, solder the other end to the other end of the white wire now put insulation tape round the diode and is connections.
Insulate the wire from pin 7 on the plug, this is no longer used.
Connect the red wire from pin 8 on the plug to the brown wire from the new unit.
Connect the red wire from the new unit to the red wire that was cut from pin 8, and connect the blue wire from the new unit to the light blue wire that was cut from pin 7.
Now connect the white wire to the thick white wire coming from pin 16 on the window switch plug (large plug) using a connector as shown, Careful this is permanent 12v positive.
Route the green wire along the wiring loom to the the central locking plug on the right of the drivers door, (see Photo) and connect it with a connector to the light green wire on this plug.
Finaly connect the black wire to chassis, the screw holding the speaker is ideal for this.
Recheck all your wiring, reconnect the plugs back into the mirror/window switch and temporarily hang the door panel back on the door, don't fix it in place just yet.
Carefully close the door and press the lock button on your remote, at this point you will either have a big smile on you face
or you will be wondering what the F!!! is wrong
If the mirrors don't come in on lock check that there is 12v on the white lead I had problems with the connector making contact with the wires.
Check that you have 12v on the green lead, you must use a digital meter to measure this don't use a bulb you may damage your electrics. Again I had problems with the connector because the light green lead is so thin.
If you have 12v on these wires then check that the diode you inserted in the lead to pin 2 on the mirror plug is the correct way round, the easy way to check this is to switch on the ignition and see if you have 12v on pin2 if you don't the diode is the wrong way round.
When you have the mirrors working on the central locking get into the car switch on the ignition and check that the manual switch is working if it isn't check the fuse in the unit.
I have also included a circuit of the original wiring so that those of you who are technical can work out how I have done it.
It seems a lot but really it is dead easy when you come to do it.
This also works ok with cars that have the auto locking above 10 mph enabled.