Horn Question

To test part of the circuit, I'd pull the horn button off and remove the horn wire from the contact switch. With everything else connected, touch that wire to the nut holding the steering wheel on. If it now honks, your contact switch is bad. If it still doesn't honk, your relay may be bad. Find the wire connection on the relay that goes to the contact switch in the column. Ground that wire and see if it honks. If it does, there's an open circuit somewhere from there to the column turn signal switch. If it doesn't, your relay is bad or not getting power. You should be able to do the same test at the turn signal switch connector. Just get a wiring diagram so you know which is the horn wire.