A question for you '89 Wolfsburg experts:

How is the '89 only subwoofer assembly wired?

A good friend of mine purchased a real nice '89 Wolfie last month that has a
pretty decent Alpine stereo & CD changer.  Unfortunately, the subwoofer is
not hooked up.  We've found the subwoofer leads from the stereo and some
unused wires from the old radio wiring harness.

The Bentley shows 5 leads coming from the radio to a "amplified speaker,
left front", with 2 more leads running from the "amplified speaker, left
front" to the "amplified speaker, left center".

Does anyone know exactly (no guessing please) how these 5 wires are hooked
up to a replacement stereo?

I've checked the two '89 Wolfies in my stable, but both have the original
radios and are no help.

Many thanks.

Cheers,

Jeff