Oooh, more lights! The Zig unit working. This, young Vanbuilder, is a handy gadget that controls the charging of batteries, the fridge power and other wonderful stuff with fuses you’re too young to understand yet.. It came from eBay at a cost of about £100 (you can download the instructions for it for free) second-hand, of course. I’ve also carpeted the bulkhead and fitted some auto trim around to tidy it up a bit.