I don't really know, that was the suggestion for a Tune To sign by someone from xlights. But you can do what I have done, which is to add it to each...
The buss bars I've seen are for mounting in a breaker panel - and they are for solid wire only (from what I've seen). The "terminal studs" I've found...
I had this on one particular sequence and 1 run of pixels a couple of years ago and I changed the timing in the 682 to a longer interval for that run...