I have a conduit built in my media room - an orange color plastic tube going over the ceiling of about 30 feet long. I'm not sure how to use it though to put HDMI cable in. On one end of it at the bottom of the front wall, there is a (loop?) string/ribbon coming out:
On the other end in the ceiling (for projector), there is one (no loop) ribbon coming out, taped to the side:
so my question is, which end do I put the cable in, how to tie it to the ribbon? Is there a way to do this, and leave the ribbon in so it could be used if/when later a second cable needs to be put in?