Simply question; Can a Digitrax BD4 be inserted between the PSX and track?

An area of layout is connected to one side of a PSX-2. It is hidden from operators in another room who charge in without looking around the corner. I want to add fascia LEDs that shows the track ahead is occupied.

I have a surplus BD4. There is a DS64 near the PSX. The four BD4 sections would be a benefit in other ways. My concern is presence of BD4 will in some way be read by PSX as a problem. If this will not work, do you have another suggestion?----Thanks for the help, Bob S

Robert: Yes, the BD-4 can be used with the PSX. You should "connect" the BD-4 to the wire attached to J2-1.