This is the best method I have found.
The heat shrink is really important for strain relief.  May even provide
some degree of water proofing.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Craig Cowan
Sent: Sunday, May 06, 2012 6:41 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: source for solder-on quick disconnects?

When I'm feeling like soldering on something like a ring terminal, I take
regular crimp on terminals and cut away the plastic. I slide a piece of heat
shrink over the wire then crimp on the connector as I would.  Now solder the
connector in place, slide up the heat shrink, shrink it, and good to go.

-craig