Whilst figgering out if I am happy with the rear centre armrest, and while I'm thinking of harnesses, make a template of the inside upper firewall to help with electrical planning.
Bit the bullet and cut out a battery bulkhead from 1/4" H45. Glassed the front with 3 x UND @ 45/90 with peel ply. Flipped on cure and relieved the foam over the battery for glass-to-glass, 1 x UND over the relieved bit, then 1 x UND over all and peel ply.