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  #1  
Old 14th October 2006
Halcyon's Avatar
Halcyon Halcyon is offline
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Default Wiring diagram - Central door locking

Does anyone have the wiring diagram for the K7 central locking module from a '97 GM900? Failing that, a wiring diagram for the locking switch in the centre console? Or.. both?

I'm having a bugger of a time trying to wire in an alarm with remote locking

Note: UK spec cars don't have remote central locking as standard!!
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Old 15th October 2006
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Halcyon Halcyon is offline
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I'm guessing from the lack of replies that no-one has the wiring diagram!

Ok, no matter, I re-mortgaged my house and sold my (as-yet unborn) first born into slavery in order to buy a Haynes manual..

And if you have one, that a look at the diagram for both the centre console switch pack (windows, door lock and interior lights etc)
There are three terminals marked: 15, 16 & 17.
17 is the common - but is it gound or power? Then 15 & 16 are the switches. So does anyone know where these conect to?

Meanwhile.. in the diagram of the central locking system, connections 5 & 6 go to "Alarm Immobiliser" Anyone know what these do? Could these be the lock/unlock pulses from the alarm?
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Old 15th October 2006
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15, 16 and 17 are the Lock, as you noticed. The common for the switch is 17. The switch is a 3-position momentary rocker which is normally open.

In the Haynes diagrams, the solid black line is usually ground (16), and goes to one of the "earth" points. So, when you press the switch to close the common (17) with terminal 16, you apply ground (or a logic low signal) to the "common" terminal of the switch.

The next assumption is that the other terminal (15) would then be a logic high, or close to battery voltage (10-12V).

Personally, I would just measure it with a volt meter.
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