[chuck n]

It sounds as if you are building a return loop. LGB's manual throw has a spring that always return the points to the same position, but permits a train to pass through the "closed" point. I use this on some of my passing sidings. That way I only have to throw one switch, not two. Another option is the LGB electric switch. It's mechanism permits the engine to throw the switch as it goes through against the closed switch. In this case it stays in the new position. Upon returning to the loop on the next trip the train will go through the straight track and then throw it to the curved position when leaving.

In the first example with the manual throw it always takes the same path, while it alternates paths with the second. No wiring is needed, but you may need to add some weight if you have derailments.

Are you using track power, battery, or DCC? A return loop with DC track power needs special wiring as it creates a dead short.

Chuck

Manual spring switches can be made inexpensively with spring wire. John, aka Totalwrecker, has a design that works very well. If you are interested in this type of spring switch I can show you a slightly different spring wire design when I get access to my laptop.