I am awaiting the build and delivery of an SE tomahawk sidecar. I have a 2017 Indian chief vintage. Currently I have a Kuryaken Road thunder and a small set of under glows attached directly to the battery. The sidecar will have a USB charger, Additional under glow lights and I’m considering another pair of Bluetooth speakers. Should I purchase and install an additional battery for the Sidecar support for the additional amp draws? If yes is it just a direct connect from battery to battery?