Is there a reason that you are putting the 1 to 2 cable split in a box? I think typically the end of the 1 cable is anchored and the two cable connection and related cable’s are floating in space.
I just decided to put cover over it a basically make a box instead of leaving it all exposed under the truck. It will be mounted (bolted) on the underside the frame (next to the air tank) so instead of trying to mount separate brackets on the frame it looked easier and cleaner to just make a box. The brackets provided with the kit were too wide so the box ends replace the two brackets and the cover on the box is just my idea to keep things from getting caught in the busy-ness of the mechanism. It may be hard to tell from the pics but the center section is floating and basically follows the pic below from Lokar instructions
1949 Chevy Panel Truck A Project Journal I'm old but I make up for it by being immature.
