My 02 Mitsubishi Diamante steering wheel horn doesn't work I replaced the relay switch with no luck The alarm horn does work if you attempt to open door wout turning off the alarm on car key?

If the horn isn't working despite replacing the relay, the issue may lie in the steering wheel horn switch itself, which could be faulty or disconnected. Additionally, check the wiring and fuses associated with the horn circuit. Since the alarm horn works, it's likely that the battery and fuse are functioning properly. If these components are in good condition, you may need to further inspect the steering column or consult a professional for a more thorough diagnosis.