Hello Shaun,
Many thanks for being in touch with the forum - perhaps some of the following may help :-
Have you got an owner’s manual for the car? If you do, then you will already know the fuse location from reference to the book. If you don’t, you should find one on EBay.
Anyway, on my 2006 A3, the fuse is No.15 (yes 10 amp rated),and this is located in the fuse box to be found by removing the cover panel from the end of the left hand side of the dashboard - will be evident when the passenger door is open. No. 15 is in the 3rd row down, and just short of half way along.
Does this sound like the location of the blown fuse you changed?
‘…..boot light working..’ - that may (in caps) be controlled by the courtesy light activation.
If the fuse you have replaced is the correct location, then it’s worth removing it again, and squirting some contact cleaner into the holder before replacing the fuse.
‘…..no bulbs….’ Any chance someone had tried fitting LEDs and messed something up?
If the fuse is serviceable (and yes a lower rated 7.5 should do for test purposes) and so are the bulbs, then it’s half an hour out with a meter to check voltages and earths. If you are not too confident with a meter then I would suggest it would be worth investing in an hour with a trusted local auto electrician.
Perhaps you could let us know how you get on.
Kind regards,
Gareth.
Kind regards,
Gareth.