??wiring angel eyes to burn constantly when ignition on??

So I'm a little confused about where to wire the angel eyes to stay on constantly when the ignition is on, some say go to the fuse box in the glove compartment, from say ignition under the steering wheel, some say the Black plastic box in front of driver under the hood... I know this can't be that difficult I just don't know how to.

....please help, I have a 2004 BMW 330 CI convertible