AmFlyer
Here are the wires on my 762 You can see most of them on my first picture.
Long Black wire - to center post of one light bulb socket ( there is a jumper from the center of this light bulb socket to the center of the other light bulb socket, bulbs are in series)
Long Green Wire - to one motor field coil
Short Yellow Wire - to common of one light bulb socket
Short Red Wire - to one end of solenoid coil
Other wires
Solenoid coil - other wire on coil goes to common of one light bulb
Motor Coil - other end to one brush holder
Motor - Other brush holder to common on one light bulb socket
From this I conclude:
The black wire is the one that powers the lights and I will put a switch in that line and feed with it with my 12 vac light transformer
The Red wire to the solenoid is the one that turns on or off the solenoid and it will go to a whistle switch and get 14.5 vac from my switch transformer
The Green wire is the one that feeds power to the motor via the motor coil and it will have another whistle switch and get 14.5 vac from my switch transformer
To operate the whistle
Loud whistle (both whistle vents open) - Push the Green wire switch button to power the whistle full blast
Soft Whistle (one whistle vent open) - Push both the Green wire switch button to power the whistle and Push the Red wire switch button to power the solenoid to close one of the whistle vents
For my set up with two control panels, I will have a set of two AF 762 whistle buttons on each control panel. That is the case for each of my two Lionel whistles which are in two building, one on each on the middle end of my L shaped layout. No one will ever figure out where all the whistle are coming from or which train! I went to Lionel whistles in a couple of building verses trying to keep 15 or so coal tenders whistles in operating condition and to keep from dragging down my Lionel LW transformers when using the coal tender whistles. The especially important when running two trains on one LW track loop via the relayed and blocked system for two train per track operation.
Thanks for your interest and help in figuring out this minor AF whistle situation.
Charlie