Thanks Ed, I wasn't even thinking that the yard buzzer was higher voltage. I was thinking more like a piezo buzzer until I can find the appropriate Freq Generator. Sam, I ran the jumpers from G+/- and S+/- to RG & RB respectively, and have voltage there. I still have no voltage at the Y/S pair, or at B1/R1. Not sure what I'm missing. Thnx.
