A constant "plus" is applied to the positive terminals of the signals. The signals are switched on by shorting their negative terminals to "ground" via a relay.
An assistant will be needed to complete the job.
Sequence of execution
1. To turn off one of the sound signals, remove the tip of the gray-black wire from its output.
2. The assistant presses the sound signal switch and holds it down. Using a slotted screwdriver, smoothly turning the screw clockwise or counterclockwise, adjust the sound signal, achieving the clearest, loudest sound.
3. Similarly, we adjust the other sound signal by disconnecting the corresponding wire. If the bad sound cannot be eliminated, we replace the signal.
Removal
1. To replace, disconnect the wire from the negative terminal of the battery (see "Battery - Removal and Installation").
2. Disconnect the wire tips from the sound signal output.
3. With a socket wrench on 13 mm we unscrew the nut securing the horn.
4. Remove the horn from the bracket.
5. If necessary, remove the second signal in the same way.
Installation
The sound signal is installed in the reverse order.