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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Opti Engine Harness Connector P/N?

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Old Jun 29, 2017 | 12:56 PM
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Default Opti Engine Harness Connector P/N?
Been tracking down a rough idle and misfire situation with my car and I have finally narrowed it down to the opti connector. Does anyone know the GM part number for the opti connector on the engine wiring harness? I've looked around and can only find results for the opti harness which isn't what I need. Thanks!
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Old Jun 29, 2017 | 01:39 PM
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Got a picture of it? Or how many wires are in?
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Old Jun 29, 2017 | 02:01 PM
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4 wire connector that goes to the opti spark harness on the passenger side.

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Old Jun 29, 2017 | 03:53 PM
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Look up this echlin# EC113 If that's not it, it honesty looks like a generic 4pin GM weather pack connector. Take a few pics and go into the dealer and hopefully find a not dick head parts man. They should have a connector book they can flip through to hook you up with some #'s. Hell Napa has weather pack connectors too.
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Old Jun 29, 2017 | 04:57 PM
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I was thinking it was a special connector, but I think you're right, its just a 4 pin metri-pack connector. I ordered AC Delco PT1136, should be here Saturday. I'll update this thread if it fits or not; I found a couple people asking the same thing in older threads with no answer.
Last edited by spudnick3119; Jul 1, 2017 at 06:48 PM.
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Old Jun 29, 2017 | 11:06 PM
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Sweet hope it works out for ya. Someone in your position in the future will appreciate the update if it works!
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Old Jun 30, 2017 | 01:12 PM
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Originally Posted by biketopia
Look up this echlin# EC113 If that's not it, it honesty looks like a generic 4pin GM weather pack connector.
That's the wrong part number, definitely not for the opti harness. The opti harness connector is not a weather pack either, it's a metri-pack series 150.

https://www.eficonnection.com/home/p...le-connector-2
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Old Jul 1, 2017 | 06:50 PM
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Just to confirm, AC Delco PT1136 is the correct plug. It even comes with 4 butt connectors. I haven't spliced it in yet, but it plugs into the opti harness connector perfectly.
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Old Jul 1, 2017 | 07:10 PM
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Originally Posted by spudnick3119
Just to confirm, AC Delco PT1136 is the correct plug. It even comes with 4 butt connectors. I haven't spliced it in yet, but it plugs into the opti harness connector perfectly.
I would solder the wires vs using butt connectors. Either way use heat shrink over the splice also
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