F1 is a 20x5mm or 32x6.3mm slow 2.5 or 3A glass fuse.
C2 is a 100nF whatever capacitor for spike suppression.
C1 is a polar capacitor (can be a value from some 10's to some 1000's of uF, minimum 25VDC, just to smoothen big current changes in the pump's current draw).
D1 is the flywheel diode, to prevent voltage feedback into the computer's PSU, can be any 1N400x diode.
CD
