Are you replacing the entire tubing or just the broken part?
If the entire tubing, you will need about about 7 feet of vacuum hose, to be on the safe side. Cut a little piece of the hose, so your local auto part store can give you the right size. I believe it is 5/32" hose. Locate the washer fluid bottle. Start from the washer nozzles, feed the hose all the way to the fluid bottle.
If you are just replacing the broken section, go to your local auto parts store, go to the "HELP" or "DORMAN" section, find vacuum connectors of similar size and shape to your washer hose, such as