that is all you need (as long as his is not R model as those came without the brakelight switch)
you may also need a new bracket for stock mirror mounts depending on vertical or horisontal orientation of his m/c brakets
(edit) I just noticed it's a 2002 748 - so you'll definitely need new half-brackets with mirror support if you run stock mirrors
this is the pic of front brake m/c from 2002 748 - notice that the top half-braket does not have mirror mount. On your bike the half-bracket is vertical, so it won't work