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So I just got a working tach in. And I have an idea.

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Old 01-14-2014, 06:43 PM
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Car: 1988 IROC-Z/G92
Engine: 5.0
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Axle/Gears: BW 3.45 Eaton Truetrac
So I just got a working tach in. And I have an idea.
Can someone help me modify the stock upshift light to be controllable? I no longer have the computer in the car, so it doesn't work at all, but I would like to keep my interior clean of most aftermarket gauges. Any way I can get this upshift light to work?
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Old 01-14-2014, 07:29 PM
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Re: So I just got a working tach in. And I have an idea.
Some great ideas here. http://forums.nasioc.com/forums/showthread.php?t=846787
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Old 01-14-2014, 07:58 PM
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Re: So I just got a working tach in. And I have an idea.
Originally Posted by Annihilate
Can someone help me modify the stock upshift light to be controllable? I no longer have the computer in the car, so it doesn't work at all, but I would like to keep my interior clean of most aftermarket gauges. Any way I can get this upshift light to work?
Pretty simple. Take a look at the gauge cluster wiring/pin out diagram in the link below. All you will need to do is splice into the wire and voila!

http://www.austinthirdgen.org/mkport...ter_pinout.jpg
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Old 01-14-2014, 09:02 PM
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Re: So I just got a working tach in. And I have an idea.
Is the 92 cluster same as the 89?
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Old 01-14-2014, 09:08 PM
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Re: So I just got a working tach in. And I have an idea.
Originally Posted by Annihilate
Is the 92 cluster same as the 89?
Similar in that both will have a wire running from the shift icon to a pin on the connector. You can check this out too: http://www.austinthirdgen.org/mkport...uges_part3.gif
Looks like you would want the tan and black wire. :-)
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Old 01-14-2014, 09:15 PM
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Re: So I just got a working tach in. And I have an idea.
Hmm. I wonder if someone could do a picture tutorial for me. It would be much appreciated.
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Old 01-14-2014, 10:28 PM
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Re: So I just got a working tach in. And I have an idea.
Ok, remove your gauge cluster and take a look at the back of it and find the spot where the shift light is. Then follow that wire to the connector at the back of the gauge cluster. Then find the corresponding wire that plugs into on the car's connector. Then simply splice into the wire using any array of cheap splice connectors. You just need a controller to turn the light on now.
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Old 01-14-2014, 11:16 PM
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Re: So I just got a working tach in. And I have an idea.
Originally Posted by Tibo
Ok, remove your gauge cluster and take a look at the back of it and find the spot where the shift light is. Then follow that wire to the connector at the back of the gauge cluster. Then find the corresponding wire that plugs into on the car's connector. Then simply splice into the wire using any array of cheap splice connectors. You just need a controller to turn the light on now.
And where could one find a cheap controller?
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Old 01-15-2014, 11:17 AM
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Re: So I just got a working tach in. And I have an idea.
Originally Posted by Annihilate
And where could one find a cheap controller?
Summit, Jegs, eBay... Any of these sites would probably have one. You just have to look!

I bet I could find one within 5 minutes on google, but I'm gonna make you look for yourself, teach a man to fish kind of deal.
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Old 01-15-2014, 12:23 PM
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Re: So I just got a working tach in. And I have an idea.
you already have a controller on a7 of your ecm
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Old 01-15-2014, 01:03 PM
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Re: So I just got a working tach in. And I have an idea.
Originally Posted by Tuned Performance
you already have a controller on a7 of your ecm
He doesn't have that anymore. Must've gone carb.
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Old 01-15-2014, 01:11 PM
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Re: So I just got a working tach in. And I have an idea.
Opps never mind than
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Old 01-16-2014, 05:11 PM
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Re: So I just got a working tach in. And I have an idea.
Well I didn't CHOOSE to go carb. Lol. Its just how it was when I bought it last year.
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