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Old 04-03-2020, 03:00 PM   #1
Smoke-in
 
Drives: 2018 Camaro SS 1LE
Join Date: Jan 2020
Location: Illinois
Posts: 41
External Tachometer Signal Pick up

Has anyone had any luck with installing an external Auto meter Tach? I am having trouble finding the right wires to cut into to pick up signal, I have a 2018 SS LT 1 -6M . Been in contact with Auto Meter, but not much help. Got the pin connector diagrams from GM, that come out of the ECM, but things are confusing! Anybody done this one before?? Got the Tach Adapter that I must run through.
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Old 04-04-2020, 09:44 AM   #2
Smoke-in
 
Drives: 2018 Camaro SS 1LE
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Crazy, Nobody has done this????
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Old 04-04-2020, 01:06 PM   #3
Trochoidal

 
Drives: 2017 Camaro 2SS A8
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There are a few post similar to your question and I don’t recall any follow up with results. There are posts with successful shift light installs which could provide some insight.

https://www.camaro6.com/forums/showthread.php?t=498716
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Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“
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Old 04-04-2020, 03:17 PM   #4
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Drives: 2018 Camaro SS 1LE
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Thanks Trochoidal, I have some homework to do on this. The signal must be digital, and very hard to trace. Looking at this thread, Dakota Electronics picks up the signal from the diagnostic port. Sounds easy, but I also want to plug a Ethanol gauge into that port. got to make sure I can do both. I would have though this a common install, but its tricky.
Wonder why Auto Meter does not make it this easy???
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Old 04-28-2020, 12:12 PM   #5
Cechk01
 
Drives: 2016 Camaro 2SS M6
Join Date: Mar 2019
Location: Raleigh
Posts: 56
Tach on the SS runs off the camshaft position sensor signal.

there are details about the tach signal in this TSB (PIC6299A) about an erratic tachometer

https://static.nhtsa.gov/odi/tsbs/20...26988-9999.pdf
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