I ran mine through that, it's very hard to see/use but I managed it so can't be too bad lol.
That will enable you to go under the carpet.
I've put mine behind the passenger seat (no back seats) just read it was better to put the battery as low as possible for weight balance etc tiny tiny benefit but it all adds up in the long run :twisted:
Mine sit's in a Carbon Box directly above the rear Diff! There is a Junction box in the engine bay where the strut is to tidy the cables up,as Dan said go through the rear of the glove box and down the passenger side sill area!