Re: ANL fuse size??
300 amps is safe for OFC, some say they(the link below) rate the wire a little high but if you use high quality wire and go a little under you shouldn't have any fires. IMO the cap is just something that uses more power and makes it look cool, some say use it only as last resort after electrical system upgrades. I don't care for running both grounds to the same connection. My HU even recommends grounding to a separate place, just seems a little safer to me. Recommended Power and Ground Cable Sizes & Speaker Wire Size and Length
'05 F250 King Ranch Crew Cab 4X4 Off Road Modded Powerstroke
Rebuild in process
Pioneer DEH 80PRS
Modded Linear Power LP4753IQ
Front Woofer: Infinity Kappa Perfect 6.5"
Front Tweeter: SEAS Neos in pods
Back: Pioneer TS-D6802R
Knukonceptz Karma 12ga
Stinger HPM3 RCA's
Big 8: PhoenixGold Oga