RE: [DML] NO 3rd or 4th fan speed

["Nick Kemp" <nkemp@xxxx>]

The original message said ... "I crimp with a full ratchet
tool and then solder. It may be an overkill, but I don't have problems in
the
middle of the road."

When you crimp and solder, the solder firms up the wires that can result in
broken wire strands at the solder point, eventually resulting in overheating
of the wires or full failure. The soldered portion stays firm and the wire
near the soldered connection flexes eventually breaking some of the strands.
The wire should be supported beyond the solder or strain relieved in another
manor to prevent flexing near the solder. This is much more of a problem
where the connections see greater vibrations but in a car, all wires are
subject to vibration.

Note that this tidbit was picked up from the aviation business where they do
a lot of crimped connections. Soldered and crimped is either HIGHLY
discouraged or unacceptable, I forget which. A good crimped connection is
more than adequate. Using a good ratcheting style crimper should produce a
very good connection.

I'm sure there are many connections out there that are performing well and
are both soldered and crimped. Being a "belt & suspenders" person myself on
occasion, I used to believe that soldering crimped connectors was the best
way to go and that factory production of these types of connectors were not
soldered in order to save money. The aviation wiring article that pointed
out the reason why not to solder and crimp changed my opinion.

Nick Kemp


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