Ok, wire everything up... power to the cap and amps... ground for the cap and amps... do this without the fuse at the battery installed (you should always pull the fuse when working on it)... then once everything is wired up and before you put the fuse in... take a bulb in a socket with wires or a test light, and connect one wire to each of the 2 terminals for the fuse (with the fuse still out)... essentially allowing power to flow to the cap and amps... do this with the amps OFF. Hope that clarified things.