My original harness is Soldered only. Heat one of the bullets up and it
slides right off. Solder IS a great conductor of electricity. It may not be
as good as the copper wire, but the surface area of contact is greater than
surface area of the wire to make up for the difference in resistance. If you
only crimp the ends on, you have limited the amount of current to the area of
contact. Take a 10' piece of 8 guage wire, put a 2" piece of 20 guage wire
in the middle, and you have the same load capacity as a 10'-2" piece of 20
guage wire. A soldered joint in stranded wiring makes 100% contact to both
surfaces. Crimping is limited to the area that the crimp part touches.
Devices that use crimping only, have been designed for the Loss in area of
contact and are used for convience and cost. In large grounding cable
applications the connections are cad-welded much like solder to achieve that
100% contact and that contact area is large enough to offset the difference
in resistance of the types of material used.
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