Instructions on hooking up a second amp ?

So I've got a 4 gauge wire with a 100 watt fuse running to my 1200 watt amp (200 x2 rms) powering my subs and I want to run it through a 2 Frad Capacitor and then through a distribution block and run part of the split to a new 300 x4 peak (200 x4 rms) 4 channel amp via an 8 gauge wire. now my question is basic.... show more So I've got a 4 gauge wire with a 100 watt fuse running to my 1200 watt amp (200 x2 rms) powering my subs and I want to run it through a 2 Frad Capacitor and then through a distribution block and run part of the split to a new 300 x4 peak (200 x4 rms) 4 channel amp via an 8 gauge wire. now my question is basic. WHAT do I need to do to make this possible? Do i need a fuse larger then 100 watt ? Do i need to ground the capacitor, and the amp? if you can help PLEASE let me know EVERY detail because this is my first system and Im learning as i go, sort of a personal project. THANK YOU !
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