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Author Topic: LS1 and T56 harness and engine sensor identification (with pictures)  (Read 31913 times)

Offline digitalsolo

LS1 and T56 harness and engine sensor identification (with pictures)
« on: May 10, 2010, 10:10:34 AM »
LSx harness with connectors identified:

http://www.norotors.com/pdfs/LS1HarnessID.pdf

LSx engine with sensors identified:

http://www.norotors.com/pdfs/LS1SensorID.pdf

T56:



« Last Edit: September 26, 2023, 10:28:19 AM by digitalsolo »
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Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline halfspec

Re: LS1 harness and engine sensor identification (with pictures)
« Reply #1 on: May 10, 2010, 11:28:05 AM »
Thank you Thank you! I'm about to start working on my LS1 harness and this was the pdf I was missing the most :)

Lane
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LS1hereicome

  • Guest
Re: LS1 harness and engine sensor identification (with pictures)
« Reply #2 on: July 20, 2010, 05:57:40 AM »
Awesome thread and info
THANKS!!!!!!!!!!!!!!
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MazdaNewb

  • Guest
Re: LS1 harness and engine sensor identification (with pictures)
« Reply #3 on: August 01, 2010, 05:28:11 AM »
Quote from: digitalsolo on May 10, 2010, 10:10:34 AM
LSx harness with connectors identified:

http://www.ls1fc.com/pdfs/LS1HarnessID.pdf

LSx engine with sensors identified:

http://www.ls1fc.com/pdfs/LS1SensorID.pdf

anyone one else having a problem everytime i go to the links it crashes?
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Offline digitalsolo

Re: LS1 harness and engine sensor identification (with pictures)
« Reply #4 on: August 01, 2010, 09:51:12 PM »
Work fine for me.   :)
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Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline onlysnlft

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #5 on: September 14, 2010, 04:47:29 AM »
not to be gay but i think i love you. lol ;)
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dan 8)

Hugh Ness

  • Guest
Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #6 on: October 10, 2010, 04:49:05 AM »
outstanding information, many thanks
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Offline Eddie

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #7 on: July 09, 2011, 02:54:36 AM »
Thanks!!!  Excellent info!
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Offline r71

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #8 on: October 01, 2011, 03:11:24 PM »
This thing is going to be such a time saver!
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94 FD
LS1 from 04 GTO
In Progress.....Almost done... Almost...



Build thread: http://www.norotors.com/index.php?topic=8308.msg116732#msg116732

Offline theantirotor

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #9 on: December 29, 2011, 10:14:25 PM »
Alright guys... I am trying to figure out what a certain part of the LS1 harness is.  It can be seen in the harness picture with all the numbers on it, but it is not numbered.

There is a 3 wire connector, that is connected to itself, on the passenger side bank.  In the picture you can see it between #33 and #34.  What is this?
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Offline digitalsolo

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #10 on: December 29, 2011, 10:25:25 PM »
Quote from: theantirotor on December 29, 2011, 10:14:25 PM
Alright guys... I am trying to figure out what a certain part of the LS1 harness is.  It can be seen in the harness picture with all the numbers on it, but it is not numbered.

There is a 3 wire connector, that is connected to itself, on the passenger side bank.  In the picture you can see it between #33 and #34.  What is this?

Pretty sure it is between the cam sensor and the ECU.
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Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline Pez

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #11 on: December 29, 2011, 10:28:20 PM »
It's an extension of the CMP.  Dunno why they extended the mofo all the way up there, but it uses a different pinout and different connector than the one behind the intake mani.  If you pull it out (from the male side, at the 33/34 location) all the way to the CMP location, you can remove it, and relocate the wires that connect to the female connector to the rear of the intake mani.  You must repin it to the CKP connector at position 28.  Swap it color for color. This little jumper harness is only on 98-00 F body harnesses.

Make sence?
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FC/FD plug and play wiring harnesses, LSx swap AC systems, LSx swap power steering lines.

Offline theantirotor

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #12 on: December 29, 2011, 10:35:36 PM »
the colors dont match with the cam sensor.  the one that i am talking about has a red wire, a pink with black stripe wire, and a brown with white stripe wire.  i have been trying to buzz it out but cant figure out where it goes or what it is for at all.

edit:  did not see the post above.  let me go try that.
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Offline Pez

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #13 on: December 29, 2011, 10:46:15 PM »
CMP colors are red, pink/blk, brn....
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FC/FD plug and play wiring harnesses, LSx swap AC systems, LSx swap power steering lines.

Offline theantirotor

Re: LS1 and T56 harness and engine sensor identification (with pictures)
« Reply #14 on: December 29, 2011, 10:50:52 PM »
It is the cam sensor and the colors are the same.  I guess at this point my eyes are just buggin out.

I really don't understand why they have it set up that way unless they felt the need to be able to intercept the cam sensor signal or something but I am getting rid of that extra plug now.



Thanks to both of you guys that was driving me nuts.
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