Trying to hook up a coax port that the builders didn't finish. House built last year. They finished one coax port and left the other three with the wire ran but not capped. This box has the wire going straight through it. Foamed at the top and going out the bottom. This is on an exterior wall and there's nothing it would be going to inside or out. I've confirmed the other end is just open ended. I expected to be able to pull the wire out of the bottom of the box but it's not coming. Any ideas what is going on here? Should I just cut it so I can use it?