This is a variation of the third layout shown in the back of the instruction manual for set #7725 12V Electric Passenger Train Set.
I have not shown layouts A and B because they are almost identical to #150 Series Layout K.
| 1 | Basic Oval |
| 1 | Crossover |
| 3 | x 4515 |
| 2 | x 4520 |
| 1 | x 4531 |