Thanks Jim.

Ya I guess I was just surprised to see that while stereo was off, current
draw increased with USB thumb drive connected. (via a cable to the rear USB
port). I did note that the thumb drive activity light stays on when stereo
is off. This might something specific to rear port USB connections; I'd
never seen same on my Kenwood CD equipped deck. Figured others' might want
to know about that.

I'd thought to use the Su circuit as you have done but I think I'll re
install the stereo "kill switch".

On Sat, Dec 16, 2017 at 5:42 PM, Jim Arnott <jrasite@eoni.com> wrote:

> Neil,
>
> My Pioneer non-cd stereo has maintenance power from some constant 12v
> source on the fuse box.  The actual power to make noise is switched through
> the key buzzer circuit.  Key in = tunes. Key out = no tunes. It takes it
> about three weeks without driving for the maintenance circuit to drop the
> battery to where it won’t start.
>
> Jim
>
>
>
> > On Dec 16, 2017, at 1:21 PM, Neil N <musomuso@GMAIL.COM> wrote:
> >
>
> > My Alpine NON CD head unit + amplifier "maintenance" current draw when
> > turned off.  ......
>

> >
> > - music USB thumb drive inserted:      0.210 mA
> > - music USB thumb drive removed:     0.150 mA
> >
> > Would an iPod or smart phone "music" device draw more current? i.e. would
> > the entire device be powered up even if stereo is off?
>

-- 
Neil n

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