Another great info thread on electrics for the 650R.
I just totally rewired my bike and built my harness from scratch. I also never really got the "float the ground" issue. I bolted the ground from the rectifier to the bikes frame and we shall see how that works.
I posted this before but it has good info on the electrics for the BRP and seems appropriate to add to this thread.
http://www.advrider.com/forums/showthread.php?t=161729