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I posted this in the stereo and electronics section but may have better luck here
This may be a bit confusing but bare with me. I have a 02 firebird 3.8 auto that has been converted to ls t56. The engine ECM is on a stand alone harness with its own fuse cluster and fuel pump relay. I have no a/c and the abs doesn't work since I have a 9" rear. I'm also running stand alone guages since the harness has ouputs for everything and it's own obd-2 port
So I'm wanting to see what I can remove wiring wise from the oe under hood fuse/relay boxes hoping to get them consolidated to one box.
Here's a pic of the panel some of this stuff I know I can ditch like fan related stuff fuel pump stuff. But something's I'm unsure of the smudged ones are eng Ctrl,I/p-1, IGN, and I/p-2
Consolidating engine fuse boxes 
