Yes, MSD does have the inline charging circuit. I believe that's what they call it. I got my whole setup, from someplace in Texas, but I can't remember the name of the place. I found a site on the net, that has the part number and installation info. You may have to copy and paste it, but here it is; msdpowersports.com/pdf/frm26214_4214.pdf
Should tell you everything you need to know. One thing I forgot to mention was that I have a 275 watt stator in my Banshee, and it doesn't take long to charge the battery. I do keep the charger I got from Radio Shack in my truck, when I go riding, just in case. If I'm in a hurry and the battery is dead, which has only happened twice in 3-4 years, I just plug it in for 10-15 minutes, and take off, but with that small of a charge in the battery, you don't want it to idle very long at all.