IIRC, that 'buzzer-with-key-in-ignition' circuit goes back to the early
70's on all VW's, they called it an 'anti-theft' system.  I guess, if
heeded, it helps to remind people to take their keys with them, to make it
harder for thieves to steal your car.
Maybe back to 1968, even?

Mike B.

----- Original Message -----
From: "Jeff Lincoln" <magikvw@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, March 28, 2008 9:23 AM
Subject: Re: Radio Install

> >
>> The grey wire powers the "you left your keys in the ignition"
>> buzzer/mexican hat dance when you open the door.
>>
>>
>
>
> I know many people hate it - but not me - I love that "key in the ignition
> tune"!
>
>
> --
> Thanks,
>
> Jeff
> '90 Carat (Grover)
> '86 (We call this one Parts)
> '78 Bus (Melissa) Patty's Bus
>