Finally. The big job.
Starting with the valve holders (note the cut wires and trimmed ends building up at the bottom of the chassis).
There's no real secret to this. Just work methodically, think about where the wires are going to run (direct like the shielded stuff or against the chassis like the teflon wire) and double check it's going to the right place before you cut, strip, tin, solder and trim. Repeat about eight times for each valve holder.