shift light
Thread Starter
5th Gear
Joined: May 2016
Posts: 5
Likes: 0
shift light
I'm tring to hook up my autometer pro shift light (5340) to my 05 vette
i know 12v switched to red and black and green to pin #48 (whitewire)
at the pcm but when i do i get nothing i have a 3k test chip in it
from what i understand once your pcm has been flashed you loose that signal for the tach feed .....im tring to find a alternate way of hooking up my shift light ??? i also have a lengenfelter lcn 2000 launch control would there be a way to hook it up through the launch box
i know 12v switched to red and black and green to pin #48 (whitewire)
at the pcm but when i do i get nothing i have a 3k test chip in it
from what i understand once your pcm has been flashed you loose that signal for the tach feed .....im tring to find a alternate way of hooking up my shift light ??? i also have a lengenfelter lcn 2000 launch control would there be a way to hook it up through the launch box
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
May need a pull up resistor. Google C6 tach pull up resistor and you should find some info on it
https://www.corvetteforum.com/forums...gnal-wire.html
Tune or no tune does not matter.
https://www.corvetteforum.com/forums...gnal-wire.html
Tune or no tune does not matter.
Last edited by schpenxel; May 29, 2016 at 08:03 PM.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Not sure about the Autometer light, but the MSD 8963 light I just ordered can be triggered by an inductive signal from one of the coils or even an injector on late model GMs.
Does your light have that option? The MSD comes with a special GMR connector and has to be set for one cylinder operation to work like that.
Does your light have that option? The MSD comes with a special GMR connector and has to be set for one cylinder operation to work like that.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
May need a pull up resistor. Google C6 tach pull up resistor and you should find some info on it
https://www.corvetteforum.com/forums...gnal-wire.html
Tune or no tune does not matter.
https://www.corvetteforum.com/forums...gnal-wire.html
Tune or no tune does not matter.
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
Yeah, probably just depends on the device being used..
I am messing around with one of these shift lights and did need a resistor for it. Still trying to find the best value to use but a 1K ohm resistor seems to be working. Going to try to install it in the HUD
https://www.corvetteforum.com/forums...he-skills.html
I am messing around with one of these shift lights and did need a resistor for it. Still trying to find the best value to use but a 1K ohm resistor seems to be working. Going to try to install it in the HUD
https://www.corvetteforum.com/forums...he-skills.html
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
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