i want to play music from my phone but dont necessarily want to change the headunit is there a way to install a aux port? or has anyone found any other way (i know you can play it through the radio but i heard its has static)

 

the playing through the radio tends to be the simplest option, i use its not the worst one i've heard and gets the job done for the most part until you start driving through a bunch of different radio signals

 

I little invasive but you make a cable with one end being a standard headphone male end and the out and the other 4 wires (2 right 2 left) then wire then to pins 3 - 6 of the back of your factory head... Those are the outputs to the amp. Im 80% sure this will work ..i actually plan on doing this.

 

I am no electronics expert, but I do know that wiring to the amp inputs with a signal of less than 3-4 volts peak to peak will not give good results. That is why when putting in aftermarket head units, if the pre-amp outputs are listed as 2 volts, you will have to use the speaker wires to drive the amp.
I have tried the following in my Roadster :

Sony CDXGT54UIW_EN_FR_ES - pre-amps are 4v, works fine. ( traded to maxcichon )
Alpine IDA-X001 - pre-amps too low, have to use the speaker wires. ( currently installed )
Blaupuncht Melborne SD27 - plug and play ( still have it )
OEM unit - works fine ( still have it )

Anyone ever measure the p-p of the earphone signal from a smartphone ?

 

Now this i did not know. Thanx for the heads up be fore i wasted my time!

 

Bipes Automotive iPod / Portable MP3 Adapter

Bipes Automotive Aux Input for Mercedes

SLK Products

 

So has anybody used this with the Stock radio with nav?