Voltage Drop Help

[blitzer454]

Yes, the cap are the two lines and also note the plus sign which shows that the positive terminal of the cap needs to be connected to the PWR terminal. You will also want to place the cap close to the pump controller to minimize the length of wire from the cap to the PWR terminal. Also keep the ground wire of the cap as short as possible. The triangle part of the diode diagram is the anode and the line is the cathode. The diode package has a stripe around one end of the cylinder which represents the cathode terminal. I went to digikey.com and picked a couple of parts that would be suitable.