Re: Strange how-to question(s)

On Sep 30, 1:49 pm, "Dan Beck" <d...@xxxxxxxxxx> wrote:
Hello all,

I own a vintage (1968) automobile, equipped with a vintage radio.  The
previous owner installed slightly more modern speakers.  The radio works,
adequately.  However, it is not able (of course) to accept my mp3 player as
a signal source.  As I stare at the pinout data of a USB connector methinks
I could cobble a few devices together, splice it into the connections for
the radio, and it would work, while drawing the 12 VDC current from the
battery for power.  (I like the look of the old radio; yes it would be easy
to install a modern radio with the USB connector, but that is not what I
want...)  However, I do not understand exactly the D- and D+ signal lines
from the USB; are these considered line level sources?  Also, I probably
would need some type of step down device to convert the 12 VDC to 5 VDC?

Thank you in advance for any and all ideas!

Regards,
Dan

Hello all,

thank you for your messages! Some followup information/questions are
following.

The radio is AM/FM; I have used those FM transmitters before, with
only mediocre performance.

Are the signals that come out of the headphone jack analog? I would
presume so; please correct me if I am wrong. If they are indeed
analog, does it follow that those signals could be routed into the
amplifier circuit of the vintage radio? If this is feasible, what
would I need to do to make sure the signals from the radio reception
are not "combined" with the new (mp3 device) signals, resulting in a
garbled mess?

Again, thank you for your patience in reading my messages, and for any
ideas you may have!

Regards,
Dan
.

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