run the remaining part of the new loom (the 'I' part of the 'T' if you like) to wherever you want to put the box.
After poking around, I went for the side of the battery box - avoids anything hot or moving
Using heavy duty Velcro (not supplied), I stuck it to the side, and used a zip tie for extra security.
Make sure it's somewhere you can get at the jumpers! (see next post)
I've arrowed the connectors again in this pic for a wider view