There's no such thing as an 8050-1 tender, at least from Lionel. (And I'm guessing it's Lionel, but you didn't say for sure.)
If you're referring to an 8050-T tender, then you'll need to be a lot more specific. That tender shell has been used in production for almost 50 years. It's contained sound systems for Sound of Steam, RailSounds, SignalSounds, TrainSounds, air whistles, and others.
Photos with the shell off will get you the best information.
TRW