To the TVS diode leads (which I trimmed to ~1/2" inch) , I opted to connect short wires to each before connecting those extensions into a three way splice (one 3-way splice for each of hot and common). The other 2 wires going into each of the 3-way connections are the cut ends of the original wires running into the molex connector.
This allowed a little more flexibility positioning the diode amongst the wire bundle, easier replacement of the diode later on, and enough room to slide the heat shrink tubing into position after soldering. I did try to make the extensions as short as possible to keep the diode as close in the circuit as possible to the board, without actually soldering it to the board.
Here's another picture with a wider overview.
