I have no sound now for turn signal when on. I looked at wiring diagram but couldn't find buzzer. Looking under dash cover I found a piezo alerting buzzer. Is this what makes the sound? If that is it how to test?
Ken & Peggy
Yes, and at least on the one used in the 1993 models it has a small adjustment screw for volume.
I don't have a good photo, but you can see the "annunciator" on our '93 in the bottom of this photo. It is a shiny black resin block with a white disc embedded in it. If I turn the little Phillips screw, it doesn't really adjust the volume, but acts more like a ON-OFF switch. I use it to mute the noise maker when I am working on something in the coach that requires having the ignition key on.