PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

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Old Mar 1, 2009 | 07:33 PM
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I got an extra narrow band A/F gauge and wanted to install it cause i have an empty spot on my pillar pod.......Does anyone have a pinout of the PCM or know which number wire i need to tap into? I searched and read some one said it was #69 and it was purple...i looked on my pcm and my 69 didnt look purple...lol
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Old Mar 1, 2009 | 07:36 PM
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Tapping into a signal wire like that might cause issues with the sensors feedback to the PCM. Also...be ready for a light show from the gauge any time you're not at full throttle.
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Old Mar 3, 2009 | 08:03 AM
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ya i put mine in. its a purple wire dont remember what number it is i will look later, but i didnt cut the wire, i just shaved off some of the insulation then connected it that way.
i knew not to cut it ,cuz you might run in to issues there, like stated above.
good luck
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Old Mar 3, 2009 | 10:09 AM
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Even shaving the insulation off can affect the signal through the wire, and tapping a second device into the circuit changes the signal to the PCM.
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Old Mar 10, 2009 | 07:56 PM
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Originally Posted by GT Griller
I got an extra narrow band A/F gauge and wanted to install it cause i have an empty spot on my pillar pod.......Does anyone have a pinout of the PCM or know which number wire i need to tap into? I searched and read some one said it was #69 and it was purple...i looked on my pcm and my 69 didnt look purple...lol
You dont need ****...your car isnt fast enough yet...

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