Georgep is the blocked track feeder wire from the track hooked up to the BD4 directly without connecting to the track bus?
Yes. The BD4 gets power from one bus wire and feeds one rail. The other rail in the block gets it's power from the bus
http://www.digitrax.com/media/apps/products/detection-signaling/bd4/documents/BD4.pdf
Henry
COB Potomac & Northern
Shenandoah Valley
I have wiring a question. I am using a BD4 for making blocks in my railroad layout. My question is. Does the feeder wire from the blocked track also hook up to the track bus as well as to the BD4? Or is the blocked track feeder wire from the track hooked up to the BD4 directly without connecting to the track bus?