Glad to see you are still poking at Shaw Direct. Is this for your pending move or has that already happened?
From my post on the Tough Install at the Cabin (Tough installation - Location - Help PLease
I posted the photo below. In the back of the mini-van you can see a small color TV with an old 505 on top. A neighbor let us run an extension cord to power it up, and it worked great! That method proves all the gear as well.
To me this is a no brainer. I did the same on an install for a Buddy at his Cabin near Vancouver. (It's posted here at Digital Home as well). I'd go for it anytime you need to install.