the antenna wires in my bighorn was messed up as well..... I purchased used, so its impossible to tell how it happened, and it doesnt matter anyway.... what matters is how to fix it.
my problem was someone had switched the satellite connections with the cable connections, and it messed with the booster in a way that there was never a usable signal to the tv...
once I found the issue, it was an easy fix, but finding out the problem was impossible without 2 people and LOTS of time.... so I bought a coax tester.
to look for a faulted coax, you can unhook all the cables at the tvs, switches, booster and antenna, and then you can ohm out the center conductor of all the wires against the retaining nut to check for any cable faults.... no reading means GOOD... if you get a reading, that cable is either faulty, or may still be connected.
this can be done to check for a faulty wire, with patience, but a better option is to buy a tester for the purpose.
for about $30 at a hardware or big box store, you can get a coax tester, which some models come with different colored test plugs that plug in to the ends of the disconnected coax connectors..... with corresponding colored lights on the receiver.
with the different colored test plugs being plugged in to various ends, when you touch the other end of the coax with the receiver unit, it will light up with the color of the transmitter.... so you can find out where each wire runs from/to by testing and marking the ends that have matching colors.
if it doesnt work on one coax, but does on another, the coax that wont light up is faulty....