Well, it's more for securing them against flat areas... If you take a look at the 2nd and 3rd pics in this blog post:
http://blog.thedarksighed.com/acura_...tem_wires_pt_2
you'll see the wires running along the flat areas that are normally under the rear seats... There isn't anything to really attach them to using tie wraps...
That's why I'm thinking they need to be taped down with some kind of tape that will hold up over time.
'01