I don't think the Sanyo can handle DDC3 series pumps. Per the Sanyo tech specs, max current is 1.5 amps. I hit 2.5 amps on the toshiba based DDC3 series pump, so it probably wouldn't work at 12v. Maybe at really low volts, but I think the Toshiba is the only option for DDC3 pumps at 12v, per specs it should handle 2.5 amps and testing seems to support that in short term tests.