Hi! We have a '55 plate Arapaho that we bought just before Christmas & the battery that came with it (75ah) is shot. I am going to replace this with 2 x 120 ah one's, but I'm not sure about the wiring in the battery compartment. I have what appears to be two battery harnesses. The old battery is connected to one set, with the second set tied up out of the way with 'leckie tape covering the connectors. I know it's a daft question, but do you just connect one battery to each set of wires? Or is the second set for something else?