cd32+sx1+fmv+external harddrive

[AAACHIPSET]

over  last  year or  so i have  managed to build  up a cd32 with a fmv card  an a sx1 card the  internal  harddrive  connector  doesnt  seem to work ..could  be a power issue  ..i dunno  ..but  id like to add a external  harddrive
by  pluggin  in a appropriate  cord from  sx1 to  external  box powered  for  a  harddrive  ..any  one  done  this ..?  also  does  the  disable  switch disable  an external harddrive if  switched  on? ..which way is  on  an off ?

[AAACHIPSET]

problem solved  ..external harddrive  i couldnt  get to work  ..floppy drive wouldnt let me install workbench to internal drive ...i thought it was  a power issue  ..it wasnt ..my  external floppy drive  from when i bought my original a500  was  dying  ..not  bad for hardware i guess bought it when i got my 1.3 amiga  in 1986  i think ..installed  workbench 3.5 on a compact flash card on my 1200  plugged into the sx1 ..everything works  no crashes ..still would  like to get a external 3.5  drive  one day but cant find anyone  who has done  this  or  any info online  ..