I just installed my winch ARB bumper a few weeks ago. Very straight forward, the old bumper comes off easily. You can install this yourself by aligning the bumper with the 2 frame horns. As others have stated, wait until you have all the bolts in 1st before tightening everything down.
The only thing I have not done yet is wire up the turn signals and am thinking about configuring them with the disco setup like I read about recently...that looks pretty cool (i.e. bling bling).
Good luck--you will also find more info here on the board if you need it.
Don't forget about ARB USA--they will answer your tech questions as well if you wish to call them. You should'nt need to tap into them since all the info you need is on this forum.
Dave