Twin horns are installed behind the radiator grille and do not require any attention. If they are not working, it is important to test the circuit fuse and connecting wiring. To check the horn switch, lever off the crash-pad from the center of the steering wheel, unscrew the retaining screws and remove the contact bar. If the fault has been rectified by the fuse, wiring and switch being correct, but it still remains, the horn should be renewed.