I'd check myself but my bentley's is buried in the van right now.  Is the radio circuit omitted from the wiring diagrams?
 
Ryan
 

> Date: Sun, 11 Sep 2011 07:23:09 -0400
> From: phishman068@GMAIL.COM
> Subject: Re: Stereo wires don't match up
> To: vanagon@GERRY.VANAGON.COM
> 
> Yes indeed. .This is the process I've been working with. However, it would
> be nice to have a comprehensive list of "Brown/Red goes to....."
> That could easily and accurately be referenced to the diagrams included with
> the stereo.
> I was hoping someone knew of one. I found one on thesamba but it's wrong.
> 
> Thanks!
> 
> -Craig
> 
> 
> On Sun, Sep 11, 2011 at 1:42 AM, Zeitgeist <gruengeist@gmail.com> wrote:
> 
> > Seems like the most important wires you want to locate, are the speaker
> > wires. You could pull each speaker and take note of what colors are used,
> > as well as the polarity for each. You can double check this back at the
> > dash by briefly hooking up a little 9v battery to those same wires and see
> > if you can get the speakers to crackle when touching the wires to the
> > battery. Rinse and repeat for each speaker. You can then use a test light
> > to determine the battery and keyed power sources, though it might be easier
> > to just run those from the fusebox yourself. A ground should be fairly
> > obvious to determine.
> >
> > On Sat, Sep 10, 2011 at 9:53 PM, craig cowan <phishman068@gmail.com>
> > wrote:
> >
> > > I have an '87 Syncro and i'm putting a Pioneer Headunit in it. It
> > > previously
> > > had no stereo at all and all the wires cut. Well, I can find threads
> > online
> > > but the colors they list for the factory colors on the vanagon side of
> > > things aren't the same colors I have. Does anyone know what the proper
> > > colors of the vanagon side of things?
> > > Thanks!
> > >
> > > -Craig
> > >
> >
> >
> >
> > --
> > Casey
> >