Fixing the wiring on my 3D printer

I've been reasonably happy with my Solidoodle Press 3d printer, but the wiring harness was not built with any strain relief on the extruder head, which eventually led to a wire for the extruder stepper motor to fail.
Fortunately, I was able to come up with a relatively non-invasive solution by making a bracket to attach some plastic cable drag chain to the head. I did have to re-do the wiring to the head to extend the length out, but the result should be much more durable.