Not difficult as such, but time consuming.
Take your time, address one wire at a time. All the wires on the alarm are black, no id, so if you don't label them yourself before you start it is non reversible.
Alarm wiring is spliced/soldered into the bikes wiring, remove them then re-solder the colour matched original wiring back together. One at a time.
Must confess I was worried when I tackled mine, but had no problems. Off memory took me an afternoon, but I did tend to fanny on checking then double checking, worked out well in the end. Good riddance to datatool.
Dis-connect the battery before you start.
Good luck.
