I'm trying to find the pinout for the stock HU CD changer port. Does anyone know it? I've found a couple posts by searching, but no one ever really seemed to know the info.

I have the factory Mitsu 6-disc in-dash changer. My plan is to try to add an AUX input (for an MP3 player) using the same audio input harness from the changer. Basically, I'll hit the 'CD' button on the head unit to play the CDX, but then flip a DPDT switch that changes the input wires from the changer to an aux port. The CDX will be playing, but I'll hear the MP3 audio feed instead.

I really don't want to probe all 9 pins with a scope and try to work this out the hard way if someone else already has the pinout information.

I tried a wired FM modulator I bought on ebay, but I'm not really happy with the audio quality. I keep getting some ticks/pops, plus the audio level is too low even with the gain set high. (any advice on this one would be appreciate as well... maybe add a filter cap on the power feed??)

Thanks,

Rob

 

if only it were that easy. if I remember right, one or two of the pins are actually databus signaling for the cd changer. in order for that port to allow any audio input through it, it will need to be controlled by the cd changer. now you should be able to splice into the audio pairs in the changer cable, and make yourself a splitter that would allow you to switch between the mp3 input, and the cd changer input(so you could still use the changer). easiest way to signal the unit to keep the audio inputs on: pick up a cd changer, burn a cd with 1 track that spans the entire cd, and when you access the cd changer, you'll access that cd and leave it on repeat if you're listening to your mp3 player for longer then an hour or so.

you could probably replicate the circuitry needed to signal the headunit and fool it into thinking there's a cd changer. but if you knew how it's actually done... then you already know what you're getting into.

 

Re-read my post. That's exactly what I said: I have the factory 6-disc CD changer already. So I don't really need to worry about the serial data communication enabling that input port. I simply need to know what wires are the audio L/R. The CD player will play while I'm using the input port.. no problem. I won't hear it anyway, since I'll have changed the audio over using a DPDT switch.

 

I don't think this belongs in Show & Shine?

 

sorry bud, i read through it too quick. not sure which wires they are, but I've seen a few ripped cables, and if i remember right, they were noticably different. just remember that they will probably use a common ground for left/right, like a headphone adapter would use. too bad they aren't like the sony's with true rca cable audio signal

sorry i couldn't help ya more.