man thats some link!!!
a quick bit:
the set contains a 1015K and a 1015 T
place the 1015T at the earliest point of the loop-right after the switch leg- i believe this MAY have a certain direction as well to work- but i dont recall this being the case
place the 1015k at the latest point in the loop -right in front of the return switch leg -as mentioned arrow facing the direction of exit of the loop
each piece has one way 'gates' for electrical flow-called diodes
you may only run the train a single direction into the loop-
ie., in via the 1015t , out over the 1015K-no exceptions
when the entire train is inside the loop* you then reverse the polarity-either hit the direction toggle-or do a quick (or slow) turn of the dial if youre using an LGB 'center off' style controller-
the diodes will then do the rest-'blocking' the misaligned polarity
an LGB spring point switch works best in this application
*if you have other cars with electrical pick up from the wheels, they must not straddle the division points over either the 1015T of 1015K or you will have a short-ie the entire train must be electrically within the isolated portion of the loop
hope this helps
btw there are other methods of creating a reverse loop, and some in which you can enter either direction-but this is not acheived using the 1015 t and k set-and some inwhich you dont have to touch anything-it will shuttle automatically-and they are in the link too
cheers
steve