Capable alarm system draws motorcycle battery out of juice quit quickly. So I was looking for solution to charge battery with charger inside and the house through the wall. Figured out soon that much simpler is to use some solution from fifty's. Two long bolts are in wire isolation through window frame. One side has flat socket head to attach loader clamps and other side wire connectors are set under butterfly nuts. As result there is no loader left behind when riding the bike, just short wire.

Loads well and outside everything is nice and tidy, and just 12V.