make sure you have some new hosing too as its not recommended to try and reuse whats on there - its usually easiest to cut if off the barb too i reckon. what you dont wanna do is try manipulating the barb too forcefully and snapping if off.
you will need to remove the grips, undo the solenoid / eyes
undo macroline and unscrew front regulator
undo the two grip frame screws
take frame off.
uncrew the frm by undoing the bolt in it (look at from the bottom of the FRM)
be careful as once you undo the frm the lpr body will move as its under spring pressure.
remove hose, and attach (hose) to new FRM
screw FRM back on.
reverse the first 6 or so points.