Wow, what is all that? Should be one loom running forward and one running to the rear. What runs forward in the first picture looks to be the right diameter loom, but there is so much of it there. It should come out of the end of the steering column, run along the bottom of the frame and pop up next to the grill shell where the loom splits. Part of it goes to the horn and dr side headlight. The rest of the loom continues across the bottom of the radiator, clipped into the tabs there, then up to the pax side light. The loom along the frame rail is held in place by a couple clips, with the front one (which looks simular to the one you have on the water jacket) attached to the bolt for the front hood latch.
I ran my turn signal wires in 1/4" loom material (from MAC's) down to the floor behind the kick panel and out a slot that was already there. It came out next to the frame and isn't seen from the engine compartment. It splits and goes front and back with the other looms.
Sorry, I don't have any pics. ken