In the hatch or trunk area, is were I wire relays and the fuses, you could add a weather resistant junction box there. I admit you got me confused so I'm going to say no, you don't have to wire anything else up to that. But you could if you wanted to, like an aftermarket fuel gauge or whatever.
No you don't have to take the fuel pump out! If you have the FSM, basically you're just wiring in a relay for the pump with a new 12v hot source. Don't worry to much about the colors, find out what the wires do. The fuel pump works with power and ground period. The new relay trigger will be the old fuel pump power (via a jumper wire if you choose). all you have to do is add the 12v source. which is a direct line to the battery positive post add a 25 or 30amp fuse inline.
Ayo I have a quick question about fuel pump hotwire. When you meant that the black/blue wire connects to the harness and the other black/blue wire connecs to the pump assembly, does that mean I have to take the fuel pump out or some sort??
Im still a 240 noob btw haha