Thanks for the reminder on that.  I haven't done it but as soon as I read
about it here, I thought that's the perfect solution, using the key buzzer
signal from the ignition key to allow power to the radio.  ( use it to
control a relay of course , not actually supply power to the radio ). 
That way you can still have  tunes with 'engine and ignition off' .
And can't forget and leave it on when you leave the car.   
The perfect solution. 
Scott
www.turbovans.com 
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Pensioner
Sent: Saturday, February 09, 2008 11:32 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: lighted switch needed

I seem to recall there is a signal in the keyswitch that detects whether the
key is inserted.  It activates an electro-nag to keep you from leaving your
keys in the ignition.  You can use this to activate the relay for the
accessory power.  Then, the accessory power only works when the key is in
the ignition.  Doesn't have to be 'on' just 'in'.

Mark D. may have more information on this or query the archives.

Pensioner