I have an old Kenmore, how do I hook up the water line to it, it came with no hoses.

Depends on the type of dishwaster connector you have.

You could have a hose bib, you could have a compression fitting, you could have a clamp on fitting. If the bib on the connection valve has a rib, or ribs on it, then you will need to get some flexiable water line, and some small hose clamps, and attach to the house water line.

This is the way my dishwasher hooks up.

Connect your water line to the hot water side of your plumbing system.