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Need Help figuring out the year of my F-body Ls1 Harness

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Old 01-24-2013, 08:31 PM
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Default Need Help figuring out the year of my F-body Ls1 Harness

Started working on my ls1 harness for my lq4 swap in my nova and have ran into a little
Im using this information for pcm pinouts LT1swap.com and have found a couple places that my harness does not match the pinouts he gives.
Blue connector
  • Cavity 41 he shows as not used, I have a black wire in it.
  • Cavity 47 he shows as not used, I have a gray wire in it.
  • Cavity 55 he shows as not used, I have a black or brown wire in it.
Red connector
  • Cavity 4 he shows pink/black, I have a purple wire in it.
  • Cavity 7 he shows as not used, I have a red wire in it.
  • Cavity 41 he shows as not used, I have a gray wire in it.
  • Cavity 44 he shows light green, I dont have a wire in it.
On his website he says 99-02 are very similar but i want to make sure im going off of the correct pinout for my particular harness because im going to depin everything so i can lay it out exactly how i want on my engine, delete the emissions stuff i dont need, and extend what i need to route it through the firewall and behind the glovebox. I pulled a tag off of my harness with the number 207360 on it under a barcode if that helps any, I googled this number with every related term i could think of and didnt get any good hits.

not my first LS swap but i modified a truck harness last time so it is my first with the fbody harness.
Old 01-24-2013, 09:09 PM
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Blue connector
Cavity 41 he shows as not used, I have a black wire in it. EGR, 99-00 only
Cavity 47 he shows as not used, I have a gray wire in it. EGR, 99-00 only
Cavity 55 he shows as not used, I have a black or brown wire in it. EGR 99-00 only
Red connector
Cavity 4 he shows pink/black, I have a purple wire in it. AIR 99-00
Cavity 7 he shows as not used, I have a red wire in it. EGR, 99-00 only
Cavity 41 he shows as not used, I have a gray wire in it. EGR, 99-00 only
Cavity 44 he shows light green, I dont have a wire in it. Reverse Inhibit, M/T only

I'd say you have a 99-00 A/T harness.
Old 01-24-2013, 09:38 PM
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any idea where i could find that pinout?
Old 01-24-2013, 09:52 PM
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This is a .htm file. I had to change the extension to .pdf to upload it here. After you save it, rename the extension from .pdf back to .htm. Then you can open it with IE.
Attached Files
File Type: pdf
99 PCM Pinout.pdf (274.9 KB, 91 views)
Old 01-24-2013, 10:17 PM
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Great thank you!



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