C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Please help check my conversion harness pins (1985 to MAP)

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Old Sep 22, 2011 | 05:22 PM
  #1  
Casshern's Avatar
Casshern
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From: Columbus Ohio
Default Please help check my conversion harness pins (1985 to MAP)

I'm working on a conversion harness to directly interface the 7730 to the 6870, without cutting up the stock harness. (Plug and play, keeping the original 85 coupler intact for emergency use.)

Maybe I am going about it the wrong way, but here is what I have worked out so far for my jump harness pinning.

Vehicle has no emissions (A.I.R.) / VATS / has AT.

#1226870 - #1227730

A1 - A11
A3 - F7
A4 - E9
A5 - E7
A6 - A6
A7 - D14 / F13 ?????
A8 - A8
A9 - E12
A10 - C1
A11 - F16
A12 - A12
B1 - B1
B2 - E13
B3 - D9
B4 - C8
B5 - D8
B7 - F9
B10 - D16
C3 - E6
C4 - E5
C5 - E3
C6 - E4
C7 - ?????
C8 - D15 ?????
C9 - E8
C10 - E16
C12 - F13
C13 - F13
C14 - A5
C15 - C11
C16 - B1
D1 - D1
D2 - ?????
D3 - ?????
D5 - C7
D6 - E15
D7 - E14
D12 - B5
D12 - B6
D14 - C11
D15 - C12
D16 - C12
NEW - A4
NEW - B9
NEW - B10
NEW - B11
NEW - F15
TIE TOGETHER - D1 / D6 / D7 ?????
????? - D12
????? - F16


If you can help to see if any of this is right, fill in the blanks, or tell me I am currently in the wrong direction, I'd appreciate it!

Thanks!
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Old Sep 22, 2011 | 06:33 PM
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Tunedport90
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you will also need to pull out your knock module and connection the wire that goes to the ecm to the knock at the knock module location. the pinout at chevythunder.com is dead on.
you can install a different end on the maf and repin it at the ecm so it will be your map. thirdgen.org is another great resource.
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Old Sep 22, 2011 | 06:45 PM
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Casshern
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From: Columbus Ohio
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I have pin F9 on the #1227730 as the knock sensor input listed currently.

I've based this configuration upon the ECM pinouts at ChevyThunder.com

Originally Posted by Tunedport90
you will also need to pull out your knock module and connection the wire that goes to the ecm to the knock at the knock module location. the pinout at chevythunder.com is dead on.
you can install a different end on the maf and repin it at the ecm so it will be your map. thirdgen.org is another great resource.
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Old Sep 22, 2011 | 06:53 PM
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the maf goes through a esc knock module under the hood, the dark blue wire going to the knock gets wire too the black wire. your esc knock module is going bye bye, The 1227730's memcal contains the knock board.
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Old Oct 16, 2011 | 07:47 PM
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From: Illinois
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If you still need help with this let me know I have a PDF of the ECM pin out for the 85' just give me an email to send it to.
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