Autocom Logic 2 wiring

had this new for a while

simple red and black wringing - I have for the time being just wired direct to battery and tested and works fine, is this a big no no on a basic scrambler ?

The manual suggests a switched ignition fused supply ( but I barely had room to fit the little autocom box )

is it likely to drain the battery quickly , damage the unit ? or have any potential damage issues ?

thanks in advance.

I was surprised with how little room there is under the seat !!

 

thanks Peter