[Electron]

It is the same ground wire. There are Not two ground wires. The ground wire is connected to the antenna Mount and a length of the same ground wire extends out past were the ground wire is connected to the mount. The coax ground block has a hole with a screw , put the ground wire through the hole in the ground block and tighten the screw. The ground wire runs a short distance above the roof and then goes down the outside wall and the ground wire is connected to the main house ground wire/ electric service ground wire with a split bolt. Split bolts and other grounding clamps and etc. are available at Home Depot or Lowes.