Adding 12v sockets

[John@ECM-TECH]

I need to add 2x sockets into the glovebox to accomdate a GPS unit and a phone charger.

Whats the safest way to permently wire this in? I take it I could wire it
into the fuse box which one is the best in my b4 a5? would I need an inline fuse?

Also where is the cheapest place to get the parts?


Cheers

JP