As far as that publication is concerned - such a thing does not exist.
I knew I had seen a pin out for this somewhere, so I had a trawl through my archive print-outs.
Lo and behold, I found an old post from Andy Kirwan.
The pin-out is his... the remainder is my ramblings
I am just updating it to allow people to wire one in if so desired.
So the pin out is as follows: -
Pin 1 = +12 Volts - Red wire
Pin 2 = Temperature Sensor - Blue / White wire.
Pin 3 = Earth - Brown wire
Pin 4 = Illumination (dimmer controlled) - Grey / Black wire.
(Or wire to a Grey / Green wire if you want constant full brightness).
Pin 5 = Ignition Live - Black wire
Pin 7 = Temperature Sensor - Blue wire
Pin 12 = Speed Signal wire - Blue / Red wire.
(Not necessarily required).
Wiring in your own Display.
Many cars come with the 12 pin side release connector tucked up between the heater control panel and the glove box.
For you this is simply plug and Play.
If you only have the Analogue Clock -
You will need to get a 12 pin black side tab / squeeze release connector from an early Corsa or Astra display.
Not the later Quadlock connector.
It may be a good time to visit your local scrapper.
Get yourself a 12 pin connector plus a good length of loom to join onto.
A Temperature sensor, with connector and again a good length of loom.
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You will probably only have three wires of the seven that you need going to the analogue clock..
You should have the Red, Brown and the Grey with either Black or Green tracer stripe.
So that is pins 1, 3 and 4 sorted already.
Pins 2 and 7 are for the exterior temperature sensor.
If you do not have wires for this, then it is simply a matter of running two wires to a sensor connector of the correct type.
The route for this wire should be from the bulk head close to the diagnostic socket etc, around the back of the left suspension tower, along the inner wing and drop down through a gap behind the headlamp.
The wire should come out between the arch-liner and the bumper.
The sensor should locate nicely in a hole on the bottom lip on the left side of the bumper.
So that leaves us with ignition live and speed signal to find.
The nearest ignition live is the feed to the glove box light, or the feed to the cigarette lighter.
Either way it should be a black wire.
The final wire is the speed impulse wire.
Dependent upon the model year of the car, it can depend what you have.
Possible sites for a wire to tap into are -
Early F Reg vehicles - There is no suitable take off point.
All others should possibly have a Blue wire with Red tracer stripe leading from the radio (pin 5 of the ISO plug),
or Instrument Cluster (pin 3), or in the right side kick panel below the engine ECU (X9 pin 2).
So that is it...
