1/2" copper plumbing will work.  And you are doing the right thing
connecting them together rather than plugging them, which creates air
pockets in the system.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jamie Auch
Sent: Wednesday, July 03, 2013 8:55 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Sprung a leak!

I started to hear hissing under the back seat of my '89 auto 2.1 Westy. Anti
freeze was coming out of rear heater core. What is the size of the hoses so
that I can splice them together? This is a repair while traveling. Thanks.

Jamie Auch

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