So I just bought a 12v universal adapter from my local Walmart, which I am going to use for my old Garmin Nuvi gps. I ran my GPS wire from my handle bars down under the front fairing to the underside of the seat. Under the seat, I put the 12v adapter, attached directly to the battery. The question is - in order to not completely drain my battery overnight - do I have to unplug the Garmin charger from the adapter, or is it okay to simply unplug my GPS from the handlebar side and leave the other end connected? I hope the way I am asking this makes sense. Basically I need to know if I need to take my seat off every night and unplug it, or if I can just unhook the GPS.