The back of head unit is like this.
On the left hand side of the bottom view, there's green 6 pin socket. You don't need a special pins to use this socket. Normal PC mainboard pins are good for this.
Pin layout
R1 : Aux Det GND
R2: Aux GND
R3: Aux Right
R4: S-GND
R5: Aux Left
R6: GND
Connections;
1. Short R1 and R6 and connect it to your stereo jack's GND.
2. R3 to Right input of stereo jack.
3. R5 to Left input of stereo jack.
4. Don't connect anything to R2 and R4.
Alternative Connection: Described by Marc Schneider from Germany (01 Oct 2007)
Hi, I own a german 2002 version of the
Honda Jazz (GD1), which looks almost similar to yours (same color,...).
So I also built the AUX-input and had some problems.
First with your wiring I had absolutely no channel seperation between
left and right, different sound levels left and right and terrible sound
quality. As I changed the wiring in that way, that I attached audio
ground (stereo jack's ground) to R4 (not R6) everything was fine.
Second it could be easier for some people to connect R1 to ground to
enable the AUX-input by using a jumper bridge from a computer between R1
and R2, which also works very good (both R2 and R6 are connected to
chassis ground).
And third: the wiring to the headphone jack is drawn not very well. As
the left channel is connected to the tip of the jack it would be better
to exchange the red and the green line on the jack, because the tip is
connected to the middle connector on a real world jack.
A further addition could be, thet the pitch of the pins in the green
connector is 2.54mm so that the female version of pin headers (six in a
row) fit very well and you don't need single PC mainboard pins.
Lars Heineken from Germany has created following scheme from Marc's advice. Thanks to his great work. (23 Dec 2008)
First you need to remove the head unit.
There are total of 3 screws to remove.
.
