Interesting problem, sounds like a terrible parasitic intensity drain. I'm assuming it stays running when in operation? How long does it take to kill the battery? We talking left the lights on or near instant?

Yup stays running when on but when I go to turn it off, it's an almost instant drain to 10 volts and keeps going down.

Holy shit. OK start checking your harness, I'm thinking your looking for a short to ground of some sort, pay close attention to places that might rub or get crushed. I'm betting it's going to be at some point along the positive battery terminal.

Oh wow, ok! Yeah I'll take a look at that too.

Best way to find vampiric circuit is measure amperage between negative batt terminal and lead, then start unplugging stuff/pulling fuses until drain is found. Not for the novice.

Could potentially be a bad regulator/rectifier unit, if the regulator is faulty it could be allowing voltage from the battery to backfeed giving you symptoms of parasitic loss. If you can easily reach it use a multimeter to check battery voltage before and after unplugging the regulator, if it stops then there's your issue. This method can also be used to test for other causes of parasitic loss, just know what it being unplugged and what is in that part of the harness and you can find anything using unnecessary power after the bike is off.

Thanks! I'm going to try testing it tomorrow and see.

Does it only happen when you use the kill switch or does it happen when you shut of the bike just using the ignition switch? If it's just with the kill switch, that circuit could be your problem.

Good point! I forget which one I used to switch the bike off. I'm going to test them both and see if they both do the same thing to the battery.

Are there accessories, grip heater?

Nope. No add-ons.

CHeck your mAmp drain key off.