while shopping at the local Hobby Lobby I ventured down the jewelry lane an found a nice lil spool that has what I've found to be some pretty darn near tow cable look alike and its cheap an hold paint very nicely..
$2.59 in .018mm 30 ft.
Beadalon flexible
7 strand nylon coated stainless steal bead stringing wire..
holds a nice shap with alil C&A glue
I've used it on My M-26 ATRV as well as tow cables on a couple tank kits I'm workin on.
hope it helps
Chris