Fry.  You will have to run an extra ground wire.

david

At 05:52 PM 5/19/2001, mattf wrote:
>I have an 84' with the original pod speakers in the rear.  These speakers
>share a single common wire.  Is it possible to use a 4 channel stereo and
>tie the commons for the 2 rear channels, or will this fry the
>stereo?   I've read all the recent mails about installing 6x9's etc, but I
>really don't want to do that just yet.  Thanks for your help.
>
>
>matt

David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"