I am sorry for being stupid here, the older I get the more frequent it happens.
I am told by the googles that the part number you reference Furuno 000-197-069-10 Cable is a 12 to 10-Pin Transducer Adapter, not the power cable. I am looking for a power cable - positive/negative/ground that I can splice into a DC power source on one end and plug the other end into the power plug on the back of my TZT3. Exactly like the power cable that came with the unit. I need a second one. What am I misunderstanding?