Hi, I sent the photo to the email address provided.
To answer, I got the pump and the cable that connects to the pump and the PWM mobo header (which features the circuit board with alarm inline). No other cabling. The SATA to 4-pin I bought in order to power the pump to fill the loop.
My leading theory is that my SATA to 4-pin is only delivering 1.5 amps, and the pump needs 1.6. I've ordered 2 alternatives to test out (a molex adapter instead of SATA and another wall plug solution).