Add aux to volume pot?

[chopstx]

This is my first post on this forum, I joined to ask this question. Name's Marshall.

My truck has a base model, AM/FM radio. No CD, no aux, no cassette. I just purchased a RadioShack normally closed audio port. Could I wire that in to the volume potentiometer so that the sound goes through the amp and then to the speakers? I want to be able to use the radio when I'm not using the aux. (Hence the 'normally closed' port)

Thanks!

 

[tauro0221]

Hi,
You can use an FM Transmitters for your iPhone, iPod, iPad, Android devices, MP3 players. You set the FM transmitter device to a no FM station frequency and you can listen any portable device without making modification to your car radio. Do a Google or a search in Ebay "FM Transmitters for your iPhone".

 

[chopstx]

Not looking for FM modulator... Just adding an aux input

 

[cukaracha]

In theory, yes. But you would need a way to silence the radio completely without using the volume knob. If you simply connected the aux in in series with the radio (on the input side of the potentiometer), the radio signal would get added to the aux signal. As such, you'll need a switch to toggle between the radio and aux.

 

[sreten]

Hi, Yes, if you wire it correctly to the volume pot input, rgds, sreten.

You need to break the radio to pot connections and wire
them back together via the sockets closed connections.

Inserting the plug does the switching, interrupting the normally
closed connections of radio to pot, to open, and feeding the
aux input to the pot via the now open lifted switch fingers.

 

[chopstx]

You need to break the radio to pot connections and wire them back together via the sockets closed connections.

Inserting the plug does the switching, interrupting the normally
closed connections of radio to pot, to open, and feeding the
aux input to the pot via the now open lifted switch fingers.

Thank you for this! Best info I have read/heard! It makes sense. The aux plug is essentially a middleman that can either allow a) the mp3 signal to be played, or b) the radio signal to be played. Wired in parallel as a switch that opens or closes the radio portion, at the same time as it turns on or off the aux.

But what if there are no physical wires that connect the radio receiver to the volume pot? Then what

 

[nonprof]

cut the PCB lines, normally at the terminal of the slider of the potentiometer. use shielded wires and metallic body DPDT switch push button. insert series resistors from AUX.

 

[chopstx]

cut the PCB lines, normally at the terminal of the slider of the potentiometer. use shielded wires and metallic body DPDT switch push button. insert series resistors from AUX.

That's confusing