Seems like there is an illustration in the '66 Chrysler FSM? Pump mounts directly below the tank. Outlet line runs in the trough in the lh frt fender shield till it gets to the cowl. There is attached to the F-divider item which sends the water to the rh side of things, with one line going to the lh nozzle and the other line continuing to the rh nozzle. At least that's how it is on our '66 Newport Town Sedan. The hose runs with the wiriing harnesses in that trough, under the retainers. I would suspect others to be exactly the same.
The "F" divider item is available for B-bodies from the restoration vendors. It's held to the cowl top with a round-head Phillips sheet metal screw about 1/4" long or so.
CBODY67