Where is each T56 speedometer connection supposed to go?
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Where is each T56 speedometer connection supposed to go? TLDR; On a T56 which speedometer connector goes where?
I've seen a diagram that shows an "A" side that is pu/wh and looks like a ground maybe, and a "B" that is gy/bk which I'm not sure about otherwise. Would it go to my OSS hi signal, OSS low signal, or somewhere else?
Full story:
So I have a 2009 Pontiac G8 GT that I've done a DOD delete, T56 Magnum XL manual swap, FBO and had tuned with a Holden commodore segment swap for the manual swap and the BCM tuned for the manual swap as well.
I get a speedometer reading off the ABS that matches GPS, but the ECU thinks it's going at 158mph at all times and won't let RPMs go over about 5770. I'm trying to figure a way to hook the transmission to my ECU but having trouble finding info. Hoping somebody here can help.
I've seen a diagram that shows an "A" side that is pu/wh and looks like a ground maybe, and a "B" that is gy/bk which I'm not sure about otherwise. Would it go to my OSS hi signal, OSS low signal, or somewhere else?
Full story:
So I have a 2009 Pontiac G8 GT that I've done a DOD delete, T56 Magnum XL manual swap, FBO and had tuned with a Holden commodore segment swap for the manual swap and the BCM tuned for the manual swap as well.
I get a speedometer reading off the ABS that matches GPS, but the ECU thinks it's going at 158mph at all times and won't let RPMs go over about 5770. I'm trying to figure a way to hook the transmission to my ECU but having trouble finding info. Hoping somebody here can help.
Last edited by zygee; Sep 16, 2019 at 11:36 AM.
This link might help. Pin 71 and 72 on J1 connector are VSS high and VSS low for manual trans. http://lt1swap.com/E38%20ECM%20Connector%20Pinouts.htm
Thread Starter
Teching In
Joined: Jun 2016
Posts: 17
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This link might help. Pin 71 and 72 on J1 connector are VSS high and VSS low for manual trans. http://lt1swap.com/E38%20ECM%20Connector%20Pinouts.htm
The diagram someone sent me of the speed sensor on the transmission itself is what I described above, having a GY/BK an PU/WH wires that would come from it stock I guess.
Do neither of the wires coming from the speed sensor on the transmission go to a ground directly? If so, which one goes to the VSS HI/VSS LOW and will it hurt anything if I get them mixed up?
