pushing the horn button puts a ground on that wire to complete the circuit to the horn, use an ohmeter to check, from the wire end to the column tube, you should get continuity when the button is depressed
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
