LS Swap guys…wiring routing question

[LS short box]

So here's what I did on my 68 C10 LS swap project.
I love to hide wires on my LS swaps.
I used a Howell LS swap harness. It has fan wires/relay built in. Also the fuel pump relay. Also fuses as needed.
I used a Painless universal chassis wiring harness. 21 circuit?
Frame mounted the battery on the right side just behind the cab. Ran the 12 volt pos cable directly to the center post on the starter solenoid. All the 12 volt pos needed for the truck comes off the center post of the starter solenoid.
Neg cable to the engine block. Then neg cable from the engine block to the frame. LS swaps love good grounds.
I mounted the ECM and fuse block in the cab behind the glove box. I had to section the the glove box a bit to make room.
ECM engine wire loom harness runs thru a hole in the fire wall just behind the right cylinder head.
Couple of pics.