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Sierra in dash tacho not working with gti twincam conversion
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Author:  Benny90 [ Mon Oct 29, 2012 8:56 am ]
Post subject:  Sierra in dash tacho not working with gti twincam conversion

Bought my 95 sierra soft top about 2-3 months back. The previous owner done the engine convertion and he said he couldn't work out how to get the tacho working.
Any ideas what the problem could be before I go pulling it apart?

Author:  masterA [ Mon Oct 29, 2012 11:04 am ]
Post subject:  Re: in dash Tacho not working with gti twincam convertion.

I believe its a brown wire that needs to be hooked up to the coil

Author:  Benny90 [ Mon Oct 29, 2012 5:07 pm ]
Post subject:  Re: in dash Tacho not working with gti twincam convertion.

So there is no reason why the tacho cant be hooked up to suit the twincam engine?
I couldn't see why not.

Author:  matty_wall [ Mon Oct 29, 2012 5:27 pm ]
Post subject:  Re: in dash Tacho not working with gti twincam convertion.

Benny90 wrote:
So there is no reason why the tacho cant be hooked up to suit the twincam engine?
I couldn't see why not.


Nope no reason. I used the standard tacho in my old hardtop with a gti motor.

Author:  BlueSuzy [ Mon Oct 29, 2012 11:10 pm ]
Post subject:  Re: in dash Tacho not working with gti twincam convertion.

Only the twin coils wont work. Jimny, Carry, Baleno G motors.

Not sure if other motors series J or M or H work either.

Author:  Benny90 [ Tue Oct 30, 2012 8:49 am ]
Post subject:  Re: Sierra in dash tacho not working with gti twincam conver

Alrighty. So best way to do it would be pull the dash face off? Or try sorce the wire from under the dash looking up from the driver footwell?

Author:  matty_wall [ Tue Oct 30, 2012 9:01 am ]
Post subject:  Re: Sierra in dash tacho not working with gti twincam conver

The Cluster will have to come out. It would be a 30min job to see if the brown wire isnt broken or if the tacho is broken.

Author:  KEENSY85 [ Fri Nov 09, 2012 12:57 pm ]
Post subject:  Re: Sierra in dash tacho not working with gti twincam conver

Is any of the original loom under the bonnet( im not ffamiliar with the gti conversion) maybe he trimed the brown wire and taped it to the loom

Author:  Benny90 [ Fri Nov 09, 2012 10:36 pm ]
Post subject:  Re: Sierra in dash tacho not working with gti twincam conver

not that I'm aware of. Will see what happeneds. If I run into trouble when I get around to doing it ill reply on here.

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