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Old 06-11-2016, 02:01 PM   #1
spadz93
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Tach wire at coil pack harness?

Anyone know if there's a tach wire at either of the coil pack harnesses? Trying to install a shift light and would much rather tap the lingenfelter harness rather than my factory harness. Not to mention I could use the wire loom for a cleaner install. Note, wire must NOT be positive and must be negative
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Old 06-11-2016, 02:07 PM   #2
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Just trace the pink wire from the factory cool harness to the Lingenfelter harness.
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Old 06-11-2016, 05:02 PM   #3
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Quote:
Originally Posted by Trob85 View Post
Just trace the pink wire from the factory cool harness to the Lingenfelter harness.
I read the pink wire was positive, not negative

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Old 06-15-2016, 12:28 AM   #4
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no other takers? Guess i can t-tap at the ecu, just was looking to utilize wire looming that I already had in place
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Old 06-15-2016, 01:28 PM   #5
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I used the trigger wire that runs to the #1 coil pack for an RPM reference for my trans controller. I'm not sure how it will work for a shift light. The update rate is slightly slower than the actual rev.
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Old 06-15-2016, 01:32 PM   #6
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http://i40.photobucket.com/albums/e2...chematic-1.gif

I think this is what i used to figure it out. Id have to go look when i get home
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Old 06-15-2016, 09:58 PM   #7
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Quote:
Originally Posted by williamp78 View Post
http://i40.photobucket.com/albums/e2...chematic-1.gif

I think this is what i used to figure it out. Id have to go look when i get home
So, would pin B be what I'm looking for?
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Old 06-16-2016, 07:20 AM   #8
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I'm 99% sure that's what I used. But I forgot to look last night at the car.
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Old 06-16-2016, 09:15 PM   #9
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Ok so if you pull the connector. Looking at it with the clip up. 2nd pin is where it's at. Brown wire on mine.
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Old 06-17-2016, 12:06 AM   #10
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Quote:
Originally Posted by williamp78 View Post
Ok so if you pull the connector. Looking at it with the clip up. 2nd pin is where it's at. Brown wire on mine.
Perfect. Thanks for checking it out for me!
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Old 06-17-2016, 07:29 AM   #11
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No. I think it's a 1 pulse for 2 rev signal
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Old 06-28-2016, 08:12 PM   #12
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I have a bypass module for a remote start that spits out a tach signal to let the remote start know if A: the car is running and B: if the car over-revs. Wonder if this is an adequate signal for a shift light. Wouldn't even have to poke through the firewall

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