Mystery electircs in battery compartment

[Dezzy]

Just for future ref, when i did my towbar electrics i pulled the cable that Audi have placed in there, cut the euro plug off the end and wired up. Much easier than wiring into the light feeds or whatever. Obviously thats for a 96 A8, not sure on the later cars having wires for stuff they don't have but my 8 looks to be wired for everything it doesn't have.