Horn wont work, kinda unique problem SOLVED

I got one for ya! 71 demon new horn relay and 1 day the lower horn quits. no reason I can find! upper horn honks when horn button is pushed but with lower horn wire attached it only makes bonk sound and shows drop on amp hand. I can unhook the wires from the lower mounted horn and the upper one works fine when horn button is pressed. I can jump 12 volts to the lower horn and it works perfect as will both when 12 volts are jumped directly to the lower wires. this is crazy to me! Is the lower horn drawing to much current? All wires are connected the relay is new so I give up?