A terminal strip is used to connect a bunch of wires together without twisting all the ends together. This is the strip that I used. All of the wire slots along the sides are connecter together with a jumper that goes in the slot in the middle. A two hole jumper is shown below. This terminal strip has 20 openings, with a screw that tightens the wire in place. If you connect one wire from your transformer hot wire it adds power to the whole strip. Now there is room to connect 19 additional power wires to your track center rail. You need another terminal strip connected to the outside ground rails.
