Soldering the heavy wire is beyond the heat capacity of my small Weller soldering station. I dug out my old 140 Watt (also Weller) soldering gun and it was ideal for the job.
I am quite pleased with the results, expecially when comparing it to the photos I took of the original assembly. The last step is to connect the power cord.
I am now ready to power up and test the unit, after carefully checking the wiring one last time.