As Kim said, the Vanagons don't have an ACC position in the radio wiring
harness. The easiest way to fix this issue is to connect both positive
power wires from the radio (might be red and yellow, might be other
colors) to the "memory" or "battery" wire in that extra harness you
bought (just make sure to cap off the "ACC" wire from the extra
harness). The only important side effect this will have is that you will
have to manually turn the power off on the radio whenever you get out of
the van.

Alternatively, you could "create" an ACC connection for the radio. To do
this you will need a volt-ohm meter (multi-meter). Pull that plastic
cover off the underside of the steering column (assuming yours isn't
already broken like so many of ours). Test for voltage from some of the
wires under there. You want to find a wire that reads about 12v when the
ignition is turned on, but has 0v when the ignition is off. When you
find that wire, you can tap into it and and connect it to the ACC wire
for the radio, instead of connecting the power wires together. With this
setup, the radio will turn off when you turn off the van (like VW should
have done in the first place!).

If you have any other questions, or problems with this, just drop me a
line and I'll do my best to help.

Sean B.
Long Beach, CA

Michael Sullivan wrote:
> OK...Need a little advice. Bought a DUAL XDM6820 from JC Whitney and got the
> wiring harness #1784 and antenna adapter to install in 91GL.  Harness fits
> both OEM harnesses behind dash and antenna adapter w/amplifier fits, but
> when I connect all wires as instructed...no sound or power on faceplate.  It
> is a removeable faceplate and when I take it off there is a blinking red
> light showing power is getting through.  I pressed reset and no change.  I
> checked fuse #3 and all good.   Placed a call to tech support but closed
> till AM.  Any ideas? All other items on fuse work(interior lights, vanity,
> etc)Thanks, Michael.
> BTW-No power antenna in 91GL? Right?
>
> --
> Michael in San Antonio
> 91GL AT 'Gringo'
>
>