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

Opti Spark harness question???

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Old Apr 19, 2007 | 07:53 AM
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Default Opti Spark harness question???

When updating from the early style to the 95 and later opti do you just use the newer style harness to attach the opti or is there some pinouts that need to be swapped around? I used to have a link to a page that had all the info on the swap but have since lost it. Any help is appreciated.
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Old Apr 19, 2007 | 08:03 AM
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Originally Posted by LPDesRoche
When updating from the early style to the 95 and later opti do you just use the newer style harness to attach the opti or is there some pinouts that need to be swapped around? I used to have a link to a page that had all the info on the swap but have since lost it. Any help is appreciated.
The '92 has different connectors for the Opti-Spark under the right fuel-injector cover.
So, for the '92, you can use the new '95 style Opti harness if you change the connector under the fuel injector cover.

For a '93 and '94, I think you can buy the new '95 style harness and plug it in.

Tom Piper
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Old Apr 19, 2007 | 08:28 AM
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That's kind of what I remembered, just wanted to confirm before I ordered it. Thanks Tom
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Old Apr 19, 2007 | 12:22 PM
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On my 94 I had to trim part of the connector to get it to connect. Once you get the new harness, it will be pretty obvious. No repinning was needed.
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Old Apr 19, 2007 | 01:43 PM
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You know you can buy a 92-94 opti already vented from MSD.
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Old Apr 19, 2007 | 01:56 PM
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Originally Posted by Randy93
You know you can buy a 92-94 opti already vented from MSD.
....and, I believe Dynaspark too.


Tom Piper
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