Originally Posted by Gregg:
If you could get your hands on a Lionel 5906 whistle button (it would go in series with the hot wire to the center rail) You could put it where ever you wanted so the little ones could have a lot of fun.
To expand on this, Lionel suggests using 2, 5906's to activate both bell and whistle/horn. Hookup instructions were usually found within an engines manual.
Lionel used to produce the 5904 to access both sounds.
Bruce
