Schematics for Warning Light Display

Do you need specific information regarding the wiring? i.e. are you tracing one or two wires?

I made a few diagrams based on the generic digital 456M WSM that many seem to have, but the GTA may require a bit of personalisation, especially if the wiring is related to the gearbox.

Note: When constructing the diagrams, I noticed labelling errors in the WSM related to the Digitek Multifunction Display Module which I have corrected. Once you have started using my diagrams, you would have to continue using them, not refer back to the manual.

 

Here's an overview of the wiring:

https://www.dropbox.com/t/wejm8ZuLklVErrt3

Here is a chart showing detailed wire colours.

https://www.dropbox.com/t/3EhRmpPYZFoDkE7N

Note that the connectors can have up to 3 different labels.

Here are some of the functions of the Digitik Multifunction Display, but I just noticed I haven't added two inputs from the automatic gearbox (I'm not sure what they do yet)

https://www.dropbox.com/t/gBpgmlX355CAjPyK

Are you more interested in the analogue displays or the digital ones?


Let me know if you have difficulty reading the diagrams.

 

I've just noticed that the instrument light dimming circuit may need a bit of work. The original diagrams have the dimmer control on the tachometer, but as far as I know, the 456M has an external dimmer rotary switch by the driver's knee. I started adding the dimmer circuit (see first diagram), but the instrument panel internals still need some work.

 

Correction: Disregard my comments about the light dimming circuit. It rechecked it and it's ok. Must be cross-eyed

Further info on the automatic gearbox input to the Digitek Multifunction display:

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On Digitek plug C (also known as 33F in the WSM), pin 5 is connected to pin 9 on plug 4P of the Automatic Transmission ECU.
On Digitek plug A (also known as 35F in the WSM), pin 14 is connected to pin 16 on plug 19P of the Safety ECU (mounted on top of the Automatic Transmission ECU).

Get the downloads while they last... They expire in a few days.

 

I just realised that it's not clear what label "49F" is in one of the diagrams. This refers to the automatic gear selection display in the middle of the instrument cluster.

I've redrawn the diagram to make this clearer:

https://www.dropbox.com/t/dVOiVELpuGFtZxnv