How easy is it to change my car horn wires?

I have a corolla 2012 and went for an inspection and they said horn isn't working...so i went and looked and the wire from the connector is broken (connector still attached to horn, broken cable dangling). When i press the horn I hear the relay clicking so I'm guessing I just need to replace the wire from... show more I have a corolla 2012 and went for an inspection and they said horn isn't working...so i went and looked and the wire from the connector is broken (connector still attached to horn, broken cable dangling). When i press the horn I hear the relay clicking so I'm guessing I just need to replace the wire from the relay to the horn itself....how easy is this to do? I rather do it myself and not pay an extra 60 or so for a mechanic if possible....thanks.
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