Can you guys help me identify what this is for?

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this first pic is a bunch of fuses strung together and I don’t know or understand why. The second pic is the gm fuel pump relay and my question is, is this the green wire that goes all the way back to the fuel pump that triggers it to turn on and off? If not can you identify what each wire is and what it goes to? I’m replacing my fuel pump with a much bigger more robust pump and I’m confused by the wiring. It’s not my forte at all. It scares the hell out of me because I burned a wiring harness in an old Daytona I had to a crisp, and that was the last time I ever messed with wiring.

The block of fuses is probably for the ecu / injectors ect.

The wire that triggers your fuel pump *relay* is coming from the ecu. You want that wire for your new fuel pump relay (I'm assuming that's what your doing). Look at the wiring diagram for your specific ecu and see what wire is for the fuel pump. Run some thick wire for that new fuel pump!

So do I no longer use the gm relay? I got a new Aeromotive wiring kit, and it has its own relay. I know I’m wiring one to battery ground and a 10 gauge to battery power, and one of the thin black wires to ignition on and then the other thin black wire to low side computer? but where does the Chevy relay fit in?

Get rid of it.... you only want the new relay now

You do not need to wire the relay to ignition. Ecu controls the relay. You want to wire 85 terminal to ecu signal, 86 terminal to ground. Then the load terminal 30 to battery through a fuse and load terminal 87 to your fuel pump. Then obviously ground the fuel pump and you are done.