Yes, we used the Techflex stuff on the Royal Sport Camaro - the episode is on for another week. It's really nice.
You can use it after you've put the ends on the wire... the TechFlex expands to 150% of its natural size when you compress it longitudinally, so you can slide it over the terminals. Then just work some heat shrink over it. Or, you can also flip the ends inside for a clean termination.
Here's the epsiode: I think it's in the 3rd segment (3rd video box going down):
http://v8tvshow.com/index.php?option...=258&Itemid=70