Joe,
        You can certainly use the power antenna wire on the head unit if it's
always powered when the unit is on. Some HU's are smart enough to lower
the antenna when you're listening to a CD.

        There will most likely be a remote turn-on wire designed to switch
amplifiers, though. I'm sure the Kenwood Sub will have a terminal for
the remote. If you still have the manual for the HU, it should call this
out on the wiring diagrams.

        -Zandr

joe trussell wrote:
> Hi all,
>
> There is much info about this in the archives, but I couldn't really nail
> down what I was looking for.  I do apologize if this is a rehash...
>
> I just bought an older Kenwood powered subwoofer for my '85 Wolfsburg
> Westfalia, and it does not have the signal-sensing power switch like the
> newer ones do.  I'm wondering how to power it without draining the battery.
>
> I like the setup of having the radio constantly powered so I don't want to
> splice into the door buzzer or anything like that.
>
> I did find some interesting stuff about wiring an amp and/or the head unit
> through an extra defrost switch in the dash, and I do have one lying
> around...Does this work well?
>
> I have a new Pioneer head unit; if it has a powered antenna wire (I'm not
> sure if it does,) can I use that?
>
> I truly appreciate any thoughts, suggestions, ideas, tips, pointers, etc,
>
> Joe Trussell
> Denver, CO
> '85 Wolfsburg Westfalia
>
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