Robert,
With the utmost of respect for my and our friends Walt Klatt (and Joe Alexander, also guilty of such things!) who say in a most cavalier attitude, "just go to a junkyard and cut off the widget you need from a W[insert mid-60's vintage MB model number here]" AS IF we have junkyards in our backyard, and AS IF they might actually have a 1968 W108 in them.
We don't have junkyards in many parts of the country, (hardly any here anymore) and
they don't have 40 year old Mercedes in them!!! Last time I made an issue of this someone recommended "local" junkyards in Michigan--some that had been
out of business for 25 years! 'Nuf said. Who wants a 40 year old plastic part anyway?
NOW what YOU are looking for is called
braided sleeving or tubular sleeving and is a common item in electronic cable assemblies. You can either buy or order the stuff from a local electronic supplier or distributor (check local yellow pages or online) or you can order from an online distributor.
One such distributor is Mouser Electronics; page 886 in their catalog carries several kinds:
http://www.mouser.com/catalog/632/886.pdfAlternatively you can search for surplus at reduced costs such as this:
http://www.skycraftsurplus.com/index.asp?PageAction=VIEWCATS&Category=225Like shrink tubing, you need to disassemble the cable on one end; put this stuff on and then reassemble. Professional cable assemblies often have either end sealed with shrink tubing, and some of this braid actually is shrinkable with heat--depends on the type, style and manufacturer.
Hope this helps.
Michael Salemi
1969 280SL
Signal Red 568G w/Black Leather (Restored)
President, International Stars Section
Mercedes-Benz Club of America