My husband has been doing model railroading for over 40 years....recently we were watching a program about model building. We saw a tool someone was using. It was a wire cutter/splicer. It was able to cut a section of the wire out in the middle.....and take the casing off the wire. Like if you needed to join wires in the middle. Not sure I am explaining this right. We want to take 2 wires and make it look like a "T". join the bottom portion of the "T" to the top portion.....splice that small section on the top part and the end of the bottom part and connect. Is there such a tool?