It is a power-routing turnout if it is like my #6 three-way from W/S. I only rely on feeding the entire turnout from the tail...the single track entry facing the points. Note that this turnout routes power sometimes, and sometimes not due to points contact with the stock rails. So, you will probably want to solder on some tiny jumpers between the first set of points and the stock rails, and also to the next pair and their stock rails. I then left a full gap between the three exits and their adjoining yard tracks. This keeps any shorts away when turnouts on the other ends of those yard segments are not feeding them in concert with what the three-way is feeding its matching three exits. Whether that makes sense or not, or whether it is right/logical or not, it has resulted in a reliable and short-free operation of the three-way and the rest of the yard. As soon as I let a power-bearing axle cross the gap when the points are mis-aligned on the three-way, I get the dreaded beep, beep, beep.
I model in DCC, but I don't believe there should be a difference in wiring.
I hope that helps you.
-Crandell