Wire Routing Help (1965 FLH)

Right now I have the 4-wire loom from the rear electrical panel and the 2-wire loom for the directional signals running along the backbone of the frame and under the seat post T in order to get to their respective spots. With luck I might be able to get one of the single wire looms (thinking oil pressure switch loom) under there as well, but that still leaves 2 looms (voltage regulator to generator wires and relay switch to front panel wire) that I have no idea how to route.