1997 vw jetta gt complete upgrade trouble

So this post might be a little long so im going to get right to it. I bought two CVR 12's with a ported box and a PX3200 Planet Audio mono block with a 2.0 Farad Tube Cap. I ran 4 gauge with a 150 Amp ANL Style Fuse to the cap, then grounded the cap to the trunk, from the cap i went to my mono block with a 60 Amp AGU Fuse between the cap and my amp. (Yes i just realized that the fuse probably is way to weak). Then i had my amp grounded separately. All is fine and dandy till I decided to upgrade all my speakers. I bought a pioneer D series pack that came with two 2 ways and 2 tweeters with passive crossovers, and two 4-ways (i think) I also bought a Planet Audio 1600 4 channel amp to power everything. The guy at the sound shop told me since my head unit only has front and rear RCA's on the back i needed these he also recommended using speed wire to bypass the premium audio in my car. i have no idea how to do that? all i know is that he said to hook one end to the harness of my radio and to run the other end back. They also told me instead of using a Dist block to just run my NEW 0 gauge back with a 125A fuse to the cap, then from the cap run an 8 gauge power wire to my new amp and a 4 gauge power wire to my subs amp. then to use a 4 gauge into 4 8 gauge dist, ground block. I head that putting mult, amps on one cap is a no no, especially if its different gauged wire. how do i run and wire the two passive blocks? One last question. What in the world do these go to? Thanks so much for your time and i would appreciate any answers. and i will check here often to update any questions anyone else has.

Rca adapters is ok,Power wires are ok,Crossovers wiring look at the connectors, input= speakers wires coming from amps. front -rear-left and right. Outputs 2, one output (+and- wires) tweeters  other one (+ and - wires) mid range speakers you will need 4 crossovers. You do not need speed sensor unless it is for navigation system.

ropuma wrote: Rca adapters is ok,Power wires are ok,Crossovers wiring look at the connectors, input= speakers wires coming from amps. front -rear-left and right. Outputs 2, one output (+and- wires) tweeters  other one (+ and - wires) mid range speakers you will need 4 crossovers. You do not need speed sensor unless it is for navigation system.

Thanks for your reply I've figured out most of it, but I have 2 last questions, can I leave two tweeters hooked up and powered by my HU? What do you mean speed sensors.?