I was able to do it by taking the side fairings off and somehow squeezing my hands in there to get them off...not easy but workable...if you can't do this, you may have to take the upper fairing off....see the manual in "The File Vault", which should help. Good luck.
if its the same as a j1 easest way is to take the nose cone off on the inside of the fairing are two holes (screwdriver through the hole and that will release the lam). its a pain in the bollox to do! more so when the new aftermarket units dont fit in the hole.