Steam Crazy posted:Lionel 6-5906 sound activation buttons (two per circuit) can be used with a ZW for whistle/bell functions. Some advice posted often on the Forum is worth repeating: if you run modern trains with a ZW, you must protect the circuits with a fast blow fuse or similar device. The ZW circuit breaker will protect the transformer, but not the delicate electronics in modern engines.
Yes the Lionel sound activation button ($10 a piece or so) wired opposite the instructions will provide bell with any postwar transformer with horn (red to U Black to A, B, C etc. )
However the circuit breaker or fuse in line protects the wiring, the layout, wires in lights cars, etc. If you want to protect the electronics in the modern locos you need to use transient voltage suppressors TVS between the U and hot terminals on your transformer, or between the center and outside rail via lock-on or rail or wires, or inside the locos themselves, or all 3 with redundant applications since these are dirt cheap. This will better protect your modern locos.
