tach wire, tps wire on 2006 vette
Drifting
Joined: Jul 2005
Posts: 1,969
Likes: 8
From: NJ
Depends on what you mean by Tach wire. If you are looking for an RPM output you can get that from the wiring harness on the PCM. Do a search on shift lights and you will find some links to write-ups with instructions for different years. For a TPS you might need to grab a schematic or run a wire from the sensor itself.
As far as getting the signals from inside the cabin... I have heard people talk about getting a "tach signal" from behind the dash. When I installed my shift light I could not find confirmation so I just tapped the PCM harness.
I'm not sure what you are doing but there is also the question of interpreting the signal. I'm not sure if its a direct pulse or something that needs to be translated into a usable signal. I suspect its a pulse because my shift light that uses the harness has a setting for cyls.
Hope this helps, somebody smarter than me will eventually chime in.
As far as getting the signals from inside the cabin... I have heard people talk about getting a "tach signal" from behind the dash. When I installed my shift light I could not find confirmation so I just tapped the PCM harness.
I'm not sure what you are doing but there is also the question of interpreting the signal. I'm not sure if its a direct pulse or something that needs to be translated into a usable signal. I suspect its a pulse because my shift light that uses the harness has a setting for cyls.
Hope this helps, somebody smarter than me will eventually chime in.
Melting Slicks
Joined: May 2005
Posts: 2,231
Likes: 0
From: Brownsville Tx
The tach signal can be had from the ecm. Tap into the white wire, blue connector. TPS signal can be had from the wire harness goint to the throttle body, purple wire.
Last edited by jogar80; Apr 17, 2008 at 02:02 AM.
Thread Starter
Pro
Joined: Oct 2007
Posts: 708
Likes: 0
From: Mandeville LA
Depends on what you mean by Tach wire. If you are looking for an RPM output you can get that from the wiring harness on the PCM. Do a search on shift lights and you will find some links to write-ups with instructions for different years. For a TPS you might need to grab a schematic or run a wire from the sensor itself.
As far as getting the signals from inside the cabin... I have heard people talk about getting a "tach signal" from behind the dash. When I installed my shift light I could not find confirmation so I just tapped the PCM harness.
I'm not sure what you are doing but there is also the question of interpreting the signal. I'm not sure if its a direct pulse or something that needs to be translated into a usable signal. I suspect its a pulse because my shift light that uses the harness has a setting for cyls.
Hope this helps, somebody smarter than me will eventually chime in.
As far as getting the signals from inside the cabin... I have heard people talk about getting a "tach signal" from behind the dash. When I installed my shift light I could not find confirmation so I just tapped the PCM harness.
I'm not sure what you are doing but there is also the question of interpreting the signal. I'm not sure if its a direct pulse or something that needs to be translated into a usable signal. I suspect its a pulse because my shift light that uses the harness has a setting for cyls.
Hope this helps, somebody smarter than me will eventually chime in.
Thanks again for your replys
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Without actually looking, I believe it is usually #48 on the ECM.
After looking, ECM C1 white wire pin 48
Since I can't attach anything on this forum, I'll host a picture for you.
That is the C1 connector for an E38 for my 2007 LS2 engine.
Elmer
After looking, ECM C1 white wire pin 48
Since I can't attach anything on this forum, I'll host a picture for you.
That is the C1 connector for an E38 for my 2007 LS2 engine.
Elmer
Last edited by eboggs_jkvl; Apr 17, 2008 at 11:08 AM.
Thread Starter
Pro
Joined: Oct 2007
Posts: 708
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From: Mandeville LA
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Dayem! I got it big enough!
TP sensor 1 is on the other connector and is #65 dark Green
TP sensor 2 is on same connector and is #63 Purple
TP sensor 1 is on the other connector and is #65 dark Green
TP sensor 2 is on same connector and is #63 Purple
Last edited by eboggs_jkvl; Apr 17, 2008 at 11:12 AM.
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Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
If you need more info on the LS2, try this:
http://www.ls2.com/forums/showthread...73#post6549773
Post #7 has the E38 connectors on the 2007 Corvette
I think the other information is for the 2005 GTO
Elmer
http://www.ls2.com/forums/showthread...73#post6549773
Post #7 has the E38 connectors on the 2007 Corvette
I think the other information is for the 2005 GTO
Elmer
Last edited by eboggs_jkvl; Apr 17, 2008 at 11:34 AM.
Drifting
Joined: Dec 2002
Posts: 1,613
Likes: 0
The Wideband Comader does not work well on our cars I think you have to choose which of the functions you want to run I will ask my friend how he did it as it did not work the firs few ways we hooked it up.
I know you CAN NOT use the rpm signal from the coil pak.
You must go to the PCM and that causes a problem for another feature or a ck engine light cant remember which.
TP sensor 1 = grey connector pin 65 dark green
TP sensor 2 = grey connector pin 63 purple
(THIS IS WHAT WORKED BEST FOR ME BUT DID NOT WORK WITH THE WBC.)
TP 1 signal is above 4v at idle and below 1v at WOT.
TP 2 is below 1v at idle and above 4v at WOT.
TP connection is at the throttle body.
or
APP sensor 1 = black connector pin 29 dark blue
APP sensor 2 = black connector pin 32 light blue
APP 1 is below 1v at idle and above 4v at WOT.
APP 2 is .5v at idle and above 2v at WOT.
APP is the accelerator pedal position sensor
I know you CAN NOT use the rpm signal from the coil pak.
You must go to the PCM and that causes a problem for another feature or a ck engine light cant remember which.
TP sensor 1 = grey connector pin 65 dark green
TP sensor 2 = grey connector pin 63 purple
(THIS IS WHAT WORKED BEST FOR ME BUT DID NOT WORK WITH THE WBC.)
TP 1 signal is above 4v at idle and below 1v at WOT.
TP 2 is below 1v at idle and above 4v at WOT.
TP connection is at the throttle body.
or
APP sensor 1 = black connector pin 29 dark blue
APP sensor 2 = black connector pin 32 light blue
APP 1 is below 1v at idle and above 4v at WOT.
APP 2 is .5v at idle and above 2v at WOT.
APP is the accelerator pedal position sensor
Last edited by SoldSyclone; Apr 17, 2008 at 12:06 PM.
Intermediate
Joined: Mar 2008
Posts: 44
Likes: 0
From: Murrieta CA
Try this shift light install link I wrote up a while back. Didn't have to access the ECM.
http://forums.corvetteforum.com/show...post1564504509
http://forums.corvetteforum.com/show...post1564504509
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 853
From: Daytona Beach FL
Here's a thread with some pics from when I installed my shift light:
http://forums.corvetteforum.com/c6-t...ift-light.html
Bob
