The OG says you should not connect anything directly to the battery. As the battery is so conveniently located in the boot it would be ideal to connect to for my power inverter & DVD player.
Other than potentilally flattening the battery I cannot see why you would do any harm. Or am I missing anything?

 

Would'nt they be on all the time or am I missing something?

 

I have my amp connected directlyto my battery, but its controlled by a remote wire that turns it on/off via a switch I rigged up

 

there is a power stud behind dead pedal. easier then hooking it directly to battery.

 

"there is a power stud behind dead pedal"? Can you explain what is dead pedal

 

^ the spot all the way to the left of the pedals a "hump" so to speak

 

ah OK, but that doesn't really help with putting stuff in the boot.

 

Yes, you can hook things up directly to the battery. Just install a fuse in the line and you will be fine. The only downfall, as was mentioned earlier, is that the battery will provide constant power so unless the device has a "turn on" wire to tell it when to turn on and off (connects to the ignition or other source that is only on when the car is on) then it will stay on all the time and drain the battery.