Hello from Brisbane.
The washer bottle and pump fitted to most Australian Series 3 trucks was a locally made unit that was also fitted to a number of Australian built cars (Holden etc) in the 70’s. It isn’t the same as the unit fitted to the UK trucks as shown in the parts manual.
Rare Spares - Gold Coast or Brisbane - sell a new version of that locally fitted unit.
The original nozzle was a chromed two jet single unit that was mounted through the rear end of the bonnet about midway between the spare tyre and trailing edge. If your truck had this arrangement the hole is probably already there. The later Defender nozzles that come in pairs and are fitted through existing blanked holes in the window frame are probably better, but may be trickier to fit with the dash panel in place.
Cheers,
Neil

