I am wiring in some a block signal on a wye, but am not sure where, or how many, gaps to cut. Here's what I'm trying to do. On the attached photo, a train comes in from the left on the straight track. The signal is that black thing in the upper left of the wye. If the mainline - the curved track on the right side of the wye which is basically an 8 x 16 loop - is not clear, the signal glows red. Once the mainline clears, the signal will change from red to yellow to green.
As you can see, there are four Ross Ready switches in the immediate area of the wye, each with a DZ-1000 switch machine. I'm not certain if they will factor into this wiring problem or not. I may be overthinking this, but before I begin cutting gaps, I wanted to ask for some suggestions.