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What is this goo?

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Old 06-14-2021, 07:40 PM
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What is this goo?

Alright, I'm going to guess that it's some sort of waterproof stuff that protects the connections blah, blah, blah? Whatever it is, it's sticky. What is it and is it good/bad? I did buy a replacement c100 firewall harness connector since I do plan on rerouting some of my wires in the engine bay and I wanted to start from the starting point. Any help on what this messy goo is? The photo is of the same connector showing both sides.
Old 06-14-2021, 07:49 PM
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Re: What is this goo?

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Old 06-14-2021, 07:49 PM
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Re: What is this goo?

LOL, maybe? the car is from the 90's...

Last edited by BytePaul; 06-14-2021 at 08:03 PM.
Old 06-14-2021, 07:52 PM
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Re: What is this goo?

Factory dielectric grease
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Old 06-14-2021, 07:56 PM
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Re: What is this goo?

Originally Posted by scooter
Factory dielectric grease
So I shouldn't worry about it? If I do replace it, should I buy a tub of dielectric grease and put it on like that?

By the way, north, south or central?
Old 06-14-2021, 08:06 PM
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Re: What is this goo?

When I make new harnesses I put CRC dielectric grease in them. You can clean the old grease out, but it's probably more of a pain than it's worth. You can just get a new C100 connector for a couple bucks, they aren't expensive

In the Trenton area
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Old 06-14-2021, 09:48 PM
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Re: What is this goo?

Originally Posted by scooter
When I make new harnesses I put CRC dielectric grease in them. You can clean the old grease out, but it's probably more of a pain than it's worth. You can just get a new C100 connector for a couple bucks, they aren't expensive

In the Trenton area
This. De-pin it and buy a new one. Use PB blaster on the terminals to clean off the remaining ectoplasm. A new one on ebay is like $9.
Old 06-14-2021, 11:05 PM
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Re: What is this goo?

Back in the 1980s GM had produced many great "sealed" electrical-connectors...
Such as Weather-pack, and Metri-Pack for individual components and inline connections.

GM spent a ton of money creating these connector systems.
However when it came time to producing a "bulkhead connector"...
Money and time were running low.

So, how do you turn an unsealed bulkhead connector into a sealed bulkhead connector for very little money?
Open up the bulkhead connector on an F-Body or G-Body from the 1980s and you will find out!

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