MTFCA Forum

I am installing a correct steering column and magneto horn on my 1916 T. On the horn one wire goes from the magneto to the horn. The other wire goes from the horn to one terminal on the horn switch. Do I need to run a wire from the other terminal on the horn button to the steering column to complete the ground path?

Keith, is it a top of the column switch held in place with two machine screws? The correct switch for 1915-16 cars has only one wire going to the switch. The switch has an inbuilt ground to the column. This ground is in the form of a thin brass piece from the switch terminal to the under side of one of the screw holes. When the screw is tightened, the ground is made.

Canadian cars had the same switch fitted to a special nut that holds the steering wheel on. Mounted this way, it was necessary to run two wires to the switch. The second one was the ground. If your switch does not have the brass piece for the ground, it may be one of these later switches. You can make and fit the brass piece to use it.

Hope this helps, Allan from down under.