Digitrax PM74, Wiring single track feed (Video#12)

In this video, we will connect the wiring from a Digitrax PM74 to a PM42 and the track. We will use the on board LEDs to monitor what the Digitrax PM74 is detecting/reporting and see the messages sent on LocoNet to JMRI.
Correction, I incorrectly said that I removed a PR4 from the layout and replaced it with another PR4. What I actually did was removed a PR3 from the layout and installed a PR4 because it had electrical isolation between the LocoNet and the USB. 
This video and other videos on this channel starting with Digitrax in the title, document my experience at implementing Digitrax products on my train layout.
LocoNet, occupancy detection, transponding, short-circuit