would like to verify a filter design I need to make for a backup camera in my truck
Seeing as neither the diode or the capacitor is actually shown with a standard symbol, it's difficult to argue if it is drawn 'wrong'. However, for clarification, it should be like this:







simulate this circuit &ndash; Schematic created using CircuitLab

A 3300uF capacitor should be fine, but you could always get a smaller ceramic capacitor in parallel with it if you are unsure, they are cheap enough that it doesn't matter if you buy some and find they are not needed.