Car radio audio input jack modification

[cmdrdata]

Ive posted the following in Maxima forum with no luck. Anyone here have
the answer? BTW, it is a Bose radio/CD head unit. I am thinking that
if I can find the output lead of the CD player, and tap that out thru
an audio jack connector, it would be ok. Don't know about impedance
though, may have to match that somehow.

I'd like to modify my 2002 Max radio so I can add an audio input jack
for
my iPod. Does anyone have access to the radio schematic? Mine is the
one
with built-in 6-cd changer. Thanks.

PS: I have done electronic work and have designed and build my own
computer way before home computers become a household work....anyone
remember the S-bus or Altair computers?

 

[Deefoo]

Ive posted the following in Maxima forum with no luck. Anyone here have
the answer? BTW, it is a Bose radio/CD head unit. I am thinking that
if I can find the output lead of the CD player, and tap that out thru
an audio jack connector, it would be ok. Don't know about impedance
though, may have to match that somehow.

I'd like to modify my 2002 Max radio so I can add an audio input jack
for
my iPod. Does anyone have access to the radio schematic? Mine is the
one
with built-in 6-cd changer. Thanks.

PS: I have done electronic work and have designed and build my own
computer way before home computers become a household work....anyone
remember the S-bus or Altair computers?

Get yourself one of those "FM transmitter + car kit wireless car audio mp3
cd new" on eBay.

BTW, modding your car radio yourself may decrease the sensitivity of your
radio.

--DF

 

[cmdrdata]

Got three of these FM transmitter(Griffin, Belkin Tunecast1 and
tunecast 2) , and they rae marginal, drifts in and out. I even extended
the antenna on the belkin), still a pain to use.

 

[ehsjr]

Ive posted the following in Maxima forum with no luck. Anyone here have
the answer? BTW, it is a Bose radio/CD head unit. I am thinking that
if I can find the output lead of the CD player, and tap that out thru
an audio jack connector, it would be ok. Don't know about impedance
though, may have to match that somehow.

I'd like to modify my 2002 Max radio so I can add an audio input jack
for
my iPod. Does anyone have access to the radio schematic? Mine is the
one
with built-in 6-cd changer. Thanks.

PS: I have done electronic work and have designed and build my own
computer way before home computers become a household work....anyone
remember the S-bus or Altair computers?

Well, if you are bound and determined on modifying the
radio's circuitry, and you don't have a schematic, you
may be able to "back into" a schematic of sorts.
Dissassemble the radio to the point where you can physically
trace the speaker leads back to an IC, probably through an
electrolytic capacitor. Get the number off the chip
and use Google to find its datasheet. If it is not some
kind of an audio amplifier chip, you're in the wrong place.
Assuming it is the audio amp chip, the datasheet will tell
you its input pins, which you can then physically
trace back to find the pre-amplifier. Stuff your
signal into the pre-amp input.

I am not recommending that you do this, only mentioning
a way if you are determined. Some electronics knowledge
is presumed, because you apparently feel capable if you
had a schematic.

Ed