PWA - Controller Board NORTHSTAR Series ED valves 7309358 Works with Square black DC motor, not round AC motor.
Timer ( PWA ) - Circuit Board NORTHSTAR series ED valves NSC15ED,NSC25ED, NST30ED, NST45ED1, NST75ED1 ( old board PWA = 7161873 ) 7309358, and uses DC motor with 2 wire connector ( our PN 7286039 )Similar, but not the same as series ED PWA number 7285601 ( which uses AC motor - therefore does not include the 2 prong power harness ).