help creating new sound system in car?

jashes136

New member
im getting all of this
head-New BOSS Audio 240 Watt In-Dash CD MP3 Player
amp-NEW Boss OL2400 4-Ch Mosfet 2400 Watt Car Amplifier/Amp
subs-2 NEW ROCKFORD FOSGATE P3D215 SUB WOOFERS 15" P3 SUBS
speakers-KICKER DS680 CAR AUDIO 5X7" 6X8" COAXIAL SPEAKER SET

do i need a capacitor or a fusebox or both?
should i get them?
link some cheap ones i can get or name a few good ones please
 
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