Hello Richard-
For the last 3 years, I've modeled parts and assemblies for a medical device company. These components have all the parts you describe, twisted wires, strain relief's, cables assemblies, etc.
Be aware modeling these components is very time consuming and tedious. Also, since they are built upon 3-D sketches and helixes, they REALLY eat up system resources and cause drawings to take forever to open. Hopefully 2004 "light weight" drawings will improve this situation. I'm still waiting, before I switch from 2003.
Keep these wires as separate parts and assemblies and insert them on the top level.
"Sporkman" wrote in message news: snipped-for-privacy@bigfootYETI.com... > SolidWorks Routing (formerly SolidWorks Piping) should have most of > these capabilities . . . at least eventually if not currently. That's a > $1000 add-in which will probably go up severely in price soon, so if you > want it go get it NOW. Otherwise there is even more expensive (but more > capable and more mature) software call EmbassyWorks which you can still > buy but which will not be updated any more and which may not be > supported past SolidWorks 2001+ (not sure about the latter