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post #1 of 6 (permalink) Old 1-18-2020, 5:31 PM Thread Starter
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Crimping terminals help.

Hi all.

I have a reasonable quality crimping tool and a box of red/yellow/blue terminals.

I think , I have worked out that the different colours are fore different core sizes of the cable you are crimping.
My problem is that around half of the connectors I crimp can be easily pulled off the cable.

Unless I crush the connector to death this happens far too often to the point where I think I must be doing something wrong.
The tool itself has a combination of troughs and peaks with the three coloured dots....but its not overly clear just where to place the connector prior to crimping.

Also, the sleeve of the crimp must have 2 overlapping semi-circular lugs to allow it to close.
Does it matter which orientation the crimp is placed prior to the crimping process.

Its so hit and miss that I'm hoping someone with a bit more experience could give me some pointers.

Thanks in advance.

R.I.P. ER-6F


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post #2 of 6 (permalink) Old 1-18-2020, 6:13 PM
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red terminal for 16-22 gauge wire blue 14-16 yellow 12-10

I'm using a crimper such this

And you? Similar?

Orientation does matter. Notice the little tit within each crimp circle? Thats where I place the "opening" of the terminal crimp area prior to squeezing. This is meant to indent each "wing" of the "opening" inwards equally, the tit producing a small dent, beyond simply flattening the wings. Imperative to start by using correct terminal to wire size.

All make sense?
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post #3 of 6 (permalink) Old 1-18-2020, 7:48 PM
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Quote:
Originally Posted by D-Tox View Post
Hi all.

I have a reasonable quality crimping tool and a box of red/yellow/blue terminals.
Define reasonable quality. Did you get it off the Snap-On truck or from Home Depot or random auto parts store?



Honestly, there are so many crap crimp tools out there you could fill a dumpster with them...and that's just different brands.



Personally, I use what ducatiman pictured on occasion but I have another similar tool that I use just for stripping the insulation off the wires I'm working with.



For actual crimping I use one of these:

It's from Klein tools and you can find it at either Home Depot or Lowes in the electrical section. There are several models of this type, some with a single crimp hammer and anvil and some with two. Mine is single but that isn't what's important. The hammer and anvil is what is important. If your crimper looks like this:



I would consider it wholly unsuitable for real electrical work. Note that the crimping portion of the tool does not have a hammer and anvil type crimper.



Using a hammer and anvil style crimper, it is possible, even with cheap terminals like you'd get at any auto parts store or even Harbor Freight, to make passable and effective repairs. Your terminals won't slip right back off but you can't wuss out when crimping either.



It takes a fairly firm squeeze of the crimper to get the job done. I mean, unless you get a set of ratcheting crimpers like some of the pros I've worked with used. They are not cheap however. I mean, if you went with a Klein anyway.



A Klein will set you back around $160. You can find them cheap on Amazon though. I've seen them there for anywhere between $15 and $160. Depends on how high a quality tool you need.



If I were doing electrical everyday and my pay check depended on that, I'd likely get the Klein tools. I'm not an electrician and I no longer work in heavy equipment repair so I just get what seems reasonable to me for my garage. The Klein crimpers I first posted were like $17 at Home Depot when I got mine 25 plus years ago. That said, you can find them from Husky or Kobalt at either big box store for under $20 still....sean


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post #4 of 6 (permalink) Old 1-20-2020, 3:09 PM Thread Starter
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Many thanks for both the replies.
It makes perfect sense for the little pip to split the two wings.
In my defence the peaks/troughs are not well defined on my set.
I will hopefully have a little more success now I understand exactly what I am trying to achieve.
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post #5 of 6 (permalink) Old 1-21-2020, 4:05 PM
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For small electrical connections I prefer soldering. If using a crimped connector I usually crimp, solder, then cover with heat shrink.

Although I recently read that soldered connections can be brittle and allow the wires to break at the end of the solder joint if flexed too much. May have to rethink my technique.

For large connectors I have one of these: https://www.harborfreight.com/hydrau...ool-66150.html
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post #6 of 6 (permalink) Old 1-24-2020, 2:27 PM
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For excellent connectors and crimpers check out vintageconnections.com . They are more expensive than the hardware store varieties but you end up with OEM quality wiring.
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