Whys does Van say to solder the capacitive fuel sender terminals that attach to the plates after crimping them? I also know of a couple products that go on 747's, 767's and 777's and C-17's that also get crimped and soldered. The question only applies to ring terminals. I have never heard of crimping and soldering connector pins, you do one or the other. Stress/Strain Relief is mandatory for any soldered connection.