Was trying to use a probe connector on a silo and it seems to not output a signal no matter where I place it on the silo.

So I then tried the probe on a chest and got the same issue. I made sure all the channel colors were setup correctly and despite filling the chest inventory with items, it did not output a signal. To be more specific, I had the probe connector receiving on a white channel and sending on a white channel, wired to a connector in output mode on the white channel connected to a redstone lamp. Upon putting items in the chest the probe was connected to, it would not output a signal.

I went back to test it in 1.12.2 to confirm if there was something I was doing wrong but it worked just fine in 1.12.2 when I connected it to a chest and put some items into it.