cascadesphil,
Yes, I'm familiar with the diagram on how to wire a cable for use between the power supply and the BP-26, as I own both. (and I have te manual.)
IMO, Belden cables are top quality, and, I've used their cable stock for many years to roll my own speaker and interconnects,
Getting excellent interconnect spades, banana plugs, coax, etc. - - and securing them to the cable is the trick.