How do I wire a shift light?
Melting Slicks
Joined: Sep 2009
Posts: 2,180
Likes: 233
From: Minnetrista Minnesota
You don't need to, it is built into the car. Turn to Track Mode, you will see a row of lights on top of the dash, as you build RPM's they begin to move towards the center, right before red line they start to blink (time to shift). And if you have HUD, they show up there in Track mode, or you can manually adjust the HUD to Track even if you are in Sport or Touring...
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
You don't need to, it is built into the car. Turn to Track Mode, you will see a row of lights on top of the dash, as you build RPM's they begin to move towards the center, right before red line they start to blink (time to shift). And if you have HUD, they show up there in Track mode, or you can manually adjust the HUD to Track even if you are in Sport or Touring...
I personally use the tach needle as it can be seen and understood in a split second rather than studying the dash looking for diff color lights and waiting till they start to blink with your foot to the floor banging shifts.
A specific bright shift light doesn't need to be watched so I can concentrate on shifts and keeping the car straight.
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Thank you for that info, BTW I was aware of that feature. It is not a good shift light to do 1/4 mile passes with on a M7 or any manual trans.
I personally use the tach needle as it can be seen and understood in a split second rather than studying the dash looking for diff color lights and waiting till they start to blink with your foot to the floor banging shifts.
A specific bright shift light doesn't need to be watched so I can concentrate on shifts and keeping the car straight.
I personally use the tach needle as it can be seen and understood in a split second rather than studying the dash looking for diff color lights and waiting till they start to blink with your foot to the floor banging shifts.
A specific bright shift light doesn't need to be watched so I can concentrate on shifts and keeping the car straight.
I want to know which wire to tap into for this as well..
Racer
Joined: May 2017
Posts: 357
Likes: 68
why bother on wires, when't there's OBDII shift lights.
https://www.speedhut.com/about-shiftlights.html
https://www.speedhut.com/about-shiftlights.html
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
I found a much better way, Holley Sniper makes an adjustible shift light that you just plug into the Diagnostic OBDII plug under the dash. You can program rpm light to launch, you can program each gear separate for when you want the shift light to come on in very fine RPM increments. Can be used virtually in any car and can just plug it in from one car to the next. I have one, its fantastic and bright. No more looking at the tach, just see the light and shift with out looking at the light.
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
See my note below, holley sniper plug in shift light. Plus right into the diagnostic port under the dash. Can be used in any car 96 and newer. Each gear can be programmed separate to any rpm you want the light to flash. A fantastic little gem.
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I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Ant
Last edited by FYREANT; Dec 27, 2018 at 06:26 PM.
Le Mans Master
Joined: Feb 2006
Posts: 5,979
Likes: 4,142
From: Kansas City, MO
Since there's no 'tach wire' any more, you might need to use something like the GMR (giant magnetoresistive) pickup sensor mentioned in this kit:
https://www.mpsracing.com/instructions/MSD/8963.pdf
I don't have any personal experience with this setup, but I did look into it as a way to set up a tachometer on an engine swap I was working on. Basically you clamp it around the low voltage trigger wire for the #1 cylinder ignition coil.
https://www.mpsracing.com/instructions/MSD/8963.pdf
I don't have any personal experience with this setup, but I did look into it as a way to set up a tachometer on an engine swap I was working on. Basically you clamp it around the low voltage trigger wire for the #1 cylinder ignition coil.