GX2 Data Logger question

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GX2 Data Logger question

Postby Mmagus on Sun Aug 19, 2012 9:30 pm

Hi,

Paul Young Sr, and Jr, and I installed a unit in Tuffy, we diligently hardwired the the power in belief that it would pick up the tach. Unfortunately we were stumped. The unit works great for speed and laps (around the block) but we are getting nada on the tach. A bit of help on identifying which one of those wires we should tap would be wonderful.

Thanks!
Mark
85.1 944 Sparky
'87 924S "Tuffy" #123, CC03
'81 928 "Leviathan" Gone to the great beyond.
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Re: GX2 Data Logger question

Postby pdy on Mon Aug 20, 2012 9:27 pm

Specifically, we wired the G2X tachometer input to the green wire from the 924S tach gauge, but no response.

TIA
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Re: GX2 Data Logger question

Postby mrondeau on Mon Aug 20, 2012 10:25 pm

Steve G wired mine to the DME and it works perfectly. I think it's pin 21 on the DME connector, a green/black wire, but verify with Steve first.
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Re: GX2 Data Logger question

Postby Jad on Tue Aug 21, 2012 8:23 am

I wired my 944T into the DME as well and it worked great. Look at the wiring diagrams, or better yet, Steve, to learn exactly where to splice it in. The turbo had a RPM out test wire, not sure if the 924 will, but it should be pretty easy to get it working.
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Re: GX2 Data Logger question

Postby davidsq on Tue Aug 21, 2012 11:02 am

we wired the G2X tachometer input to the green wire


Paul,I ASSuME it's the purple / violet wire...?

i am not a mechanic, ask anthony, he'll tell you.
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Re: GX2 Data Logger question

Postby Steve Grosekemper on Tue Aug 21, 2012 12:08 pm

Mark

Pin #21 at the DME is usually where I go because a late dash it too hard to access. (green/black)
Your 924S has early, easier to access 3 pod gauges so you can go to pin #6 of the tachometer plug (Green)
The color changes at a 4 pin flat connector just out of the DME. If you fine a white (I believe) flat plastic plug with a green wire on one end and green and black on the other that is your connection.
The other three wire colors match on each side of the plug, unlike the tach signal.

Good Luck
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Re: GX2 Data Logger question

Postby pdy on Tue Aug 21, 2012 1:38 pm

Thanks for the suggestions. I think I was trying to make it more complicated than that.

We'll dig into it after Laguna Seca. :rockon:
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Re: GX2 Data Logger question

Postby Mmagus on Tue Aug 21, 2012 10:43 pm

Thanks for the great answers folks!

Mark
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'87 924S "Tuffy" #123, CC03
'81 928 "Leviathan" Gone to the great beyond.
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Re: GX2 Data Logger question

Postby pdy on Tue Mar 05, 2013 11:27 pm

Finally got around to wiring the Tach to the Data Acquisition. Thanks, Steve - the connector is actually red in Mark's car,
but all other details were accurate. Really helpful, and made it really easy! :beerchug:

Thanks again!
Paul D. Young http://www.deadpetsracing.com/
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Now: '78 911SC, '79 911SC, '04 955-S, '06 997-S, '88 924-S, '16 92A
Past: '74 914, '78 911SC, '78 928, '80 924-S, '82 931, '86 930, '03 996-4S
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Re: GX2 Data Logger question

Postby Steve Grosekemper on Wed Mar 06, 2013 12:31 am

Glad to help.
The shift lights are a great feature on the G2X especially when you are right below the rev limiter (hopefully) but a little too busy to check the gauge...
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Re: GX2 Data Logger question

Postby pdy on Wed Mar 06, 2013 5:06 pm

Well, it'll be nice for Mark to get a more complete data picture.

Personally, I REALLY like the Predictive-Lap feature on my IQ3,
which I believe the G2X can do also (with the latest firmware).
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Now: '78 911SC, '79 911SC, '04 955-S, '06 997-S, '88 924-S, '16 92A
Past: '74 914, '78 911SC, '78 928, '80 924-S, '82 931, '86 930, '03 996-4S
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