OK, so the test show that no voltage at the load when switch wire disconnected and there is voltage when switch wire is connected. This seems to indicate that the switch wire coming from the column is shorted to ground.
So take switch wire loose from relay and do a mm continuity test, test between the end you removed from relay and a good ground. Should be no continuity. Continuity will confirm a short. You said you attached a wire from the relay to the mast bearing wire....right?
Is that connection protected from touching anything?
I WAS TYPING WHEN YOU RESPONDED SECOND TIME
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