Another update. I tested it with my portable 5" black & white TV. it works absolutely fine, although the left paddle is a little wiggly sometimes, I'll just replace the POT, that should take care of that.
I will probably also replace any caps that happen to be inside the unit, since they are 25+ years old.
It has 4 variations. I forgot exactly what it called them, but here they are.
Pong - Normal pong.
Solo - Hit it against the wall, one player only.
Handball - Both players on the same side hitting it against the wall.
Hockey/Soccer - Two paddles per player and smaller goals in the middle of each side.
There are three selectable ball speeds as well.
The switches for ball speed and game select will stay inside the cabinet. But the serve and reset buttons will make it onto the control panel. Or I might wire a toggle switch to switch between solo mode and standard Pong.
I am still not sure if this is a color or a black and white pong, as I haven't tried it on a color set yet.