It is not a signal meter in the tv, but rather a signal meter for the antenna. Since the Kingjack unit installed in the Jayco's did not include the electronic meter in the antenna assembly it is something that has to be added after the fact. At least that is what the representative at Kingjack has told me. There is a product they sell (can also be found on web at other stores) that simply hooks into the cable running from the antenna to the wall mounted coax cable box. You can read about it at there website at the following link.
SureLock | KING
I am ordering one and will report back on this subject.