I have a Corningware P-49 warming tray that is missing the cord. The
tray is marked 120V AC, 105 Watts, but cord recepticle has three pins.
I'm guessing that the the tray takes straight AC in, and that the
center pin is a dummy, but before I start screwing around and blowing
fuses and messing up the tray, does anyone know
(a) a source for a replacement cord or
(b) the wiring schematic for the tray?

Thanks

Write to Corningware and ask for a cord.
I have done so in the past for other parts for other appliances and they
have sent it to me at no charge.

Great idea, thanks!