The rig I'm making is a one-off (well, two-off actually, to support 20 devices total). I'm just trying to see if there is a some normal way one would make a pair of wires and then "tap it into them" at 10 different places. Obviously I can chop the wire and make a soldered connection at each point. I could also just run a separate pair of wires to each of the 10 points, all converging back to one point (but this makes a "star" instead of a "bus" which may screw things up).
Maybe this is a dumb question but is there some common tool that is used for this? To clip onto/into a wire in a case where you want to attach something to the line without having to cut it, solder the 3 contacts together, re-insulate it, etc.? (Wire nuts are an option too but also seem like it may be an inappropriate approach.)
EDIT: So far it looks like daisy-chaining them is the most practical approach. Whether it's with screwed-in contacts or other type of connector, just make sure I have two connectors on each device and then chain them together. That's where I'm at after looking at this off and on over a few days (and taking into account @Araho's advice).