Thread: how-to: diy aux input for 04+ xm equipped cars

Thanks for the writeup. I was able to tap into these wires up behind the factory radio. Same colors. Headunit is very easy to take out, so I found that easier than running the AUX cable through the car. If you use a 3.5mm audio jack, you can just splice the jack inline and have both AUX and working XM radio btw. Just unplug the cable from the jack and XM radio will resume.

Originally Posted by sirricealot

On the diagram it shows audio common is pin 10(tan). But you keep saying ground which is 9(black).

Agreed. Even in the OP, you said we'll be using Pin 10 (tan) as the audio ground. But two pictures later you say to connect the negatives to black/white (electrical ground). THIS WILL WORK. However it gave me some electrical noise through the speakers only when no audio was playing. Playing even a silent track made the noise go away, oddly enough, so it's really not that big of a deal. I was pressed for time and didn't have the opportunity to try out the tan wire, but my guess is that it'll eliminate the electrical noise altogether.

Originally Posted by firebirdude

Thanks for the writeup. I was able to tap into these wires up behind the factory radio. Same colors. Headunit is very easy to take out, so I found that easier than running the AUX cable through the car. If you use a 3.5mm audio jack, you can just splice the jack inline and have both AUX and working XM radio btw. Just unplug the cable from the jack and XM radio will resume.
Agreed. Even in the OP, you said we'll be using Pin 10 (tan) as the audio ground. But two pictures later you say to connect the negatives to black/white (electrical ground). THIS WILL WORK. However it gave me some electrical noise through the speakers only when no audio was playing. Playing even a silent track made the noise go away, oddly enough, so it's really not that big of a deal. I was pressed for time and didn't have the opportunity to try out the tan wire, but my guess is that it'll eliminate the electrical noise altogether.

I was wondering about that little discrepancy myself. Anybody out there use the tan wire for said voodoo