Opti harness connector - Chevy Impala SS Forum
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post #1 of 8 (permalink) Old 11-20-2017, 01:18 PM Thread Starter
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Opti harness connector

I noticed some occasional issues related to ignition some time back. I was able to track down the occasional misfires/stumbles to a dodgy connection in the wiring harness leading to the optispark.

The fault is not in the actual opti harness (the short one that plugs into the optispark) but rather the main wiring harness connector where it plugs into the opti harness.

My question is, does anyone know where to purchase a (new) replacement connector that I can install?

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post #2 of 8 (permalink) Old 11-20-2017, 03:39 PM
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I'm not sure exactly what you need but I have this site in my favorites for a just in case. https://www.eficonnection.com/home/c...ive-connectors
I hope it helps you out.


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post #3 of 8 (permalink) Old 11-20-2017, 03:52 PM
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It's nice to have a Metri-Pac repair kit,and become familiar with it's use. The more obscure "pull-to-seat" terminals used in many sensor pigtails can be sourced as needed from ebay,delcity,watek,etc...

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post #4 of 8 (permalink) Old 11-20-2017, 07:59 PM
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Are you looking for the opti end that has the super long special plug or the engine harness end?

I have some of the opti end ones. oe GM


https://www.eficonnection.com/home/p...le-connector-2


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post #5 of 8 (permalink) Old 11-20-2017, 08:34 PM
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Quote:
Originally Posted by KingsKrew View Post

My question is, does anyone know where to purchase a (new) replacement connector that I can install?
Nothing wrong with rolling your own if you want to fix your harness

or get the plug & play. Gary makes great stuff

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post #6 of 8 (permalink) Old 11-21-2017, 06:02 AM
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Quote:
Originally Posted by KingsKrew View Post
I noticed some occasional issues related to ignition some time back. I was able to track down the occasional misfires/stumbles to a dodgy connection in the wiring harness leading to the optispark.

The fault is not in the actual opti harness (the short one that plugs into the optispark) but rather the main wiring harness connector where it plugs into the opti harness.

My question is, does anyone know where to purchase a (new) replacement connector that I can install?
If I'm reading this correctly, you DO NOT need the Opti Harness that runs from the Opti up to the Harness about half way back the Passenger Side of the intake manifold. As Mentioned, the Opti Harness is available thru Gary for about $50.

But as you said, you thing you have a problem with the Connector where the Opti Harness plugs in near the Evap Purge Solenoid. Couple of suggestions there.....

Before cutting into the Factory Harness....are you 100% sure it is the Connector(s) and not just a broken wire within the Harness? Cause it is possible 1 or more of the wires in the harness have a internal breakage of the wire. If thats the case, you need to find the break and splice in a new Pigtal just before the break or repair the wire.

Another thought, it could just be that the Pin(s) of the Harness have opened up a little bit and not making a solid connection to the other side of the connector. It is possiple to take the terminal apart, tighten up the female connection so it makes a solid connection to the other side and worst case, if the Pin on the individual wire(s) is loose or dirty, you could cut it off and recrimp a new terminal to the end. I would try this first before splicing in or cutting the factory harness. I try to avoid cutting into the factory harness where ever possible.
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post #7 of 8 (permalink) Old 11-21-2017, 12:21 PM Thread Starter
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Quote:
Originally Posted by 4DoorSS View Post
If I'm reading this correctly, you DO NOT need the Opti Harness that runs from the Opti up to the Harness about half way back the Passenger Side of the intake manifold. As Mentioned, the Opti Harness is available thru Gary for about $50.

But as you said, you thing you have a problem with the Connector where the Opti Harness plugs in near the Evap Purge Solenoid. Couple of suggestions there.....

Before cutting into the Factory Harness....are you 100% sure it is the Connector(s) and not just a broken wire within the Harness? Cause it is possible 1 or more of the wires in the harness have a internal breakage of the wire. If thats the case, you need to find the break and splice in a new Pigtal just before the break or repair the wire.

Another thought, it could just be that the Pin(s) of the Harness have opened up a little bit and not making a solid connection to the other side of the connector. It is possiple to take the terminal apart, tighten up the female connection so it makes a solid connection to the other side and worst case, if the Pin on the individual wire(s) is loose or dirty, you could cut it off and recrimp a new terminal to the end. I would try this first before splicing in or cutting the factory harness. I try to avoid cutting into the factory harness where ever possible.
4DoorSS, yes you're right, I should have been more clear. I DO NOT need the short Opti harness itself. The issue I have is with the main engine harness, specifically the connector that attaches to the short opti harness.

Thank you for your suggestions. It's possible that the issue is a bad wire intermittently losing connection right at the harness connector (I've narrowed it down to either within the connector itself, or within about 1/4" of it) or it could be a relaxed terminal pin. I thought the best fix for either of these issues would be to simply swap the connector for new, if one can be found.

I appreciate everyone input, I've looked at eficonection but have not been able to locate the exact correct connector.

1996 Impala SS
1996 Caprice sold

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post #8 of 8 (permalink) Old 11-21-2017, 01:19 PM
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Usually the wire itself is broken at,or near the connector. Believe these are standard Metri-Pac 150 connectors,common in most all Metri-Pac repair kits. Or,can be sourced separately. If right at the connector,I replace the connector. If further away,I install a connector to a section of appropriate wire. Then simply splice with solder/shrink-wrap upstream.
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