Newsgroups: rec.audio.tech
Subject: Re: Car Stereo Speakers.
References: <[email protected]>
[email protected] writes:

> I don't know if this is possible or not..... I'm hoping it is.
> 
> I have an MP3 player that I want to connect into my car stereo
> speakers.  I want to be able to plut my MP3 player in using a 3.5mm
> jack and then when i unplug my mp3 player, the radio is then allowed to
> plug back in.
> 
> something like this
> 
> MP3 player --------         ------------- Radio
>                          |         |
>                          |         |
>                          \        /
>                            \    /
>                          Y Splitter
>                               |
>                               |
>                         Stereo Speakers
> 
> I think it should work in theory i just need help with the wiring.  I
> have a male - male 3.5mm jack for the MP3 Player to Y Splitter.

This is not the right way to connect it. 
There are two problems:

1. First you are directly connecting two output of two 
   devices together with Y splitter. This is not the right 
   way to do it. Wiring two outputs speaker outptus from 
   different devices to one Y spliter is practically same 
   as directly shorting them together -> it does not work 
   protperly and equipment damage is highly propable 

2. The MP3 player 3.5 mm output is not designed to drive 
   car speakers. Connecting car speaker to MP3 output 
   will most propable overload it, causing at least 
   distorted sound and not nuseable sound level... 
   at long time use can potentially damage the MP3 player!
   

> I dont know hot to connec the two speakers in my car to a female 3.5mm
> jack  As far as i can tell a femail 3.5mm jack only has two inputs yet
> my speakers have 4 wires.....  Which ones go where?  

I don't recommend to do this connection. 
The MP3 player is not designed to drive car speakers. 

> wires from the
> radio also need a male 3.5mm jack which I am guessing is wired up in
> the same way as the female cable?
> 
> Any help you can give in the wiring would be most appreciated.
> 
> Thank you
> 
> Dave
> 

-- 
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at 
http://www.epanorama.net/