Join Date: May 2017
Location: Europe - Norway
They mean one of the wires that goes to your ignition, since turning your key turns on power for the rest of the bike.
So basically, you could just draw the "raw" power needed to power the grips from the empty power socket either in the headlight, or underneat the tank, and then wire up your own "on/off" svitch to determine when they should have power or not.
So yes, connecting straight onto the battery, without any way of cutting off the power, would drain it over time.
Lyoko - Black Rebel 500