Help with power to exterrior lights

[tc4x4]

I started the night well with pulling off all the old school trailer brake stuff from the rear of the truck working my way under the hood. If you look up in the upper left the two large white fuses get power from the alternator (blue wire) on left of fuses. The red wire going in the left side I did not find the other end yet. Then go to the red and blue wires on the right side of those white fuse holders which go over the back of the engine to the grounding point i believe just at about 1 o clock to the engine. From there the blue wire going from that on the right side (driver side) goes through the fire wall to the head light switch. So IF THAT EVEN MAKES ANY SENSE WITH THE PICS TELL ME THIS...

How do i cut out all the old school big fuses and just get the power to the head light switch and ground.