Date:         Sat, 9 Feb 2008 21:15:10 -0800
Reply-To:     Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM>
Subject:      Re: lighted switch needed
Comments: To: Mike <mbucchino@CHARTER.NET>
In-Reply-To:  <065d01c86b7e$37019100$0a00a8c0@OWNERMIKE>
Content-Type: text/plain; charset="us-ascii"

Mike, 
The idea is to use the 'key on' voltage ( I called it a signal ) to energize
a relay, that will route the 'key on' power to the radio.
That way, the radio thinks it's in 'normal mode' ................like
driving down the road, just by the key being inserted in the lock
cylinder.........
Not turned on or anything, just inserted.
There's a tiny contact in there................and since I hate key
buzzers..........I've noticed how far out the key has to be pulled to get
the buzzer off............it's about half way.
 
Do you understand how relays work ? 
< you're going to use a small current to control - energize- the relay so it
can route a larger current to the radio. >

Scott
www.turbovans.com 


-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Mike
Sent: Saturday, February 09, 2008 4:45 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: lighted switch needed

Every aftermarket radio I've ever installed had 2 power leads; one smaller
lead to battery + to keep the station presets and the clock time, and one
for accessory switched power + for the main radio's power.

I've never seen one with a 'signal' input to trigger it on and off.

Mike B.

----- Original Message -----
From: "Mike S" <mikes@FLATSURFACE.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, February 09, 2008 4:13 PM
Subject: Re: lighted switch needed


> At 03:02 PM 2/9/2008, Scott Daniel - Shazam wrote...
>>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 ).
>
> You should be able to drive the radio's "acc" lead directly. Every car
> radio I've ever dealt with draws it's working power from the battery
> lead, and just uses the accessory lead as a signal - not drawing more
> than a few mA from it.
>