Hi folks, It's been awhile. I've been out of aviation due to medical problems but I'm working on getting back in the air. Anywho.... I need to determine where some tv cable goes in my house. It was pre-wired for cable/satellite tv but the one in the bonus room doesn't seem to have a connection. Can I connect a jumper to the copper line and the braid on the cable and use a circuit tester to see if it has a circuit to find the other end or do I need some special tool. I've got 3 wires that go to no where at least at the dmark in the garrage. I think the line to the bonus room might have run out side separatly from the rest and need to find out as well. Thanks.