I have read a lot on here about the location of the 12v fuse, on the T6.1 (2021) however struggled to find it.
I tried both fuse boxs, down right hand side of drive steering wheel, and small one under bonnet close to battery, with no luck. VW quoted £300 to remove swivel passenger seat, as they suspected it was under there. Ludicrous price for an 8 bolts job! Took me 20 minutes to do myself however fuse was not there just a few electrical connectors.
After some discussion with camper-king they advise me to try removing passenger plastic foot step on passenger side. 2 minute job found one solitary 20amp fuse under plastic cover. Job done all good