Paul,
This crimper is not what I would use. For one thing, the thickness of
the ferrule crimped onto the wire is very thin. If you crimp something,
you want it to really crush the wires and the crimped metal around it
together, providing what is, in essence, a connection that becomes one
solid piece, with no air between the wires.
Harbor Freight aircraft tool supply makes a tool, item # 63708 that
retails for #13.99. (You can find coupons that will give you 20% off,
and they have sales on the item). It crimps the wire to the proper
pressure, then, when one squeezes harder on the handle, it releases.
Different connectors are color coded for the size wire that is used, and
the matching color crimp is on the jaws.
I wouldn't use the cheap wire connectors that HF sells on an airplane,
because there are much better connectors sold by Mouser and other
suppliers. The really good ones have double crimp ability - one for the
wire, and a second for the insulation and wire, which give it support.
Here's an illustration:
http://electriciantraining.tpub.com/14176/css/Table-2-2-Color-Coding-Of-Copper-Terminal-Lug-Or-Splice-Insulation-59.htm
I have had a brand new female spade connector from HF slip off the male
connector with a very slight tug - I wasn't using it on an airplane. I
feel that speaks poorly about the HF connectors.
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