Does anyone know what the length of the. horn contact pin suppose to be for a 74 Z28? I am putting in a missing contact pin in my column and new horn relay. The new pin is 1 inch long. I am having a problem with the continuous blowing of the horn when I install my relay. I have cut down the pin to 3/4 inch per instructions that were in the kit and it still blows continuous when I plug in the relay. Does anyone know what I need to do to solve my issues?