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Old 08-04-2014, 12:05 AM
Mitchman's Avatar
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Beware of crappy connectors

The photo below is almost self explanatory.

I've been wiring for 2 weeks. I tested the cooling fan today and it should come on when shorting the sensor at the engine. It didn't. The relay clicked but I was getting nothing at the fan end of the wire. It's one wire from relay to fan and the wire was hot at the relay, cold on the other end at the fan.

I assumed my crimp was bad, so of course I checked by giving it a mild tug. The damned crimp pulled right out of it. The wire was hot, the connector was not. The ferule was NOT in ANY WAY fastened to the business end as you can see and powdery with corrosion.

Thank God I only used 1 set of these yellow 12ga male/female cons.... and I was not on the road sitting in traffic.

I got these about a year ago so I can't tell you where they came from. Sorry.

It's 2:00am - I can go to bed now.
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Old 08-04-2014, 12:15 AM
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Surprise! Guess where you can find genuine 3M brand connectors made in the USA! Wal-Mart
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Old 08-04-2014, 01:41 AM
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I've been using the bare high temp nickel plated terminals. Solder and then use adhesive lined cross linked polyolefin heat shrink tubing. You could probably skip soldering them but I usually do as it doesn't add too much extra time to do. The adhesive lined heat shrink also acts like a strain relief keeping the wire from pulling out of the terminal.

The nickel plating is nice as they won't corrode and it makes for a nice looking terminal. They are also made out of slightly thicker material than standard connectors making them a little more durable.

High Temperature Terminals

The next best thing I think are the heat shrink style terminals.

Heat Shrink Terminals | Heat Shrink Terminal Kits and Connectors
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Old 08-04-2014, 03:41 AM
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Quality set of crimpers makes all the difference in the world.
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Old 08-04-2014, 06:39 AM
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Quote:
Originally Posted by EOD Guy View Post
Quality set of crimpers makes all the difference in the world.
I second that, I have a great set. I tug test every one, cont test cucuits that are going to be a pain to get to. Not a failure.

This surprisingly wasn't a crimp failure, the ferule is holding onto the wire tight as a drum.
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Old 08-04-2014, 08:24 AM
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Quote:
Originally Posted by Mitchman View Post
I second that, I have a great set. I tug test every one, cont test cucuits that are going to be a pain to get to. Not a failure.

This surprisingly wasn't a crimp failure, the ferule is holding onto the wire tight as a drum.
It looks like it was smashed with a pliers or vise grips.

It also looks like that was a heat shrink style connector that wasn't shrunk.

It does look like quality cross link wire though.
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Old 08-04-2014, 11:59 AM
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Quote:
Originally Posted by 64SS327 View Post
It looks like it was smashed with a pliers or vise grips.

It also looks like that was a heat shrink style connector that wasn't shrunk.

It does look like quality cross link wire though.
Yes, heat shrink, but I don't do that til all the systems are proven to be functioning. Because this one's exposed under the hood, I chose a weather proof set (male/female). There is corrosion between the ferule and the spade on both pieces. I can't figure out how this was supposed to have been a solid connection between the two. If the ferule and spade were supposed to have been soldered during its manufacture, they missed a few.
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Old 08-05-2014, 04:55 AM
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Quote:
Originally Posted by Mitchman View Post
If the ferule and spade were supposed to have been soldered during its manufacture, they missed a few.
Took another visit to see this.------2 piece terminal not properly fused during manufacture.

These are kinda pricey little connectors too----but I don't use them

I prefer using Packard56 or Weatherpak on the cars
Under the dash for radio--instruments--and other small stuff----Molex, compact and relatively easy to connect/disconnect while contorting under the dash
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Old 08-05-2014, 09:58 AM
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A friend gave me some of these. It's all I use now

Posi-Lock(R) - The Best Connectors You'll Ever Use!
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