firewall question

Looking under the hood of my 70 Dart and other A bodies, I know there are several bendable metal wire looms or clips to hold brake lines wiring, etc. on the firewall. Looking at the blower motor, off to the right of it are about 3-4 other bendable clips that are empty. It's a non a/c car. Is that what these were for? I cannot find any part of the harness that would otherwise go there.

Here's a link to a '68 Barracuda firewall where you can see the clips. His are empty too even after full install.
http://www.forabodiesonly.com/mopar/showthread.php?t=151993&highlight=blower+motor

thanks.