OK there is something I really DON'T get...

on the factory harness (the one coming from the car itself)
there are 2 sockets "A and B", who matched the connections I have to the radio...

on A I only have 5 connectors plugged-in (X = nothing)
1- X
2- X
3- X
4- RED (+)
5- BLUE (electric antenna ?)
6- GREY/BLACK ?
7- ORANGE ?
8- BROWN (ground)

on B I have only 4 connectors plugged in
1- X
2- YELLOW
3- YELLOW / GREY
4- BLUE
5- BLUE / GREY
6- X
7- X
8- X

I had read almost all post on the forum about "replacing factory radio"
and check this auto diagram for audio
(posted # 17 here : https://www.crossfireforum.org/forum...echs-know.html)

and so far what I understand is the Infinity have a preamp somewhere else
and the wires on B 2/3 and 4/5 are just to go from the car radio to the pre-AMP, not the speakers themselves... but unfortunately I'm not a tech...

audio_diagram.pdf

but my connectors do not match the A socket at all ??? mine is a 2005, maybe they changed something because the post seems to be in 2004 ????



So on the back of my new car radio, I do have an OUT to connect an AMP (by cinch 3.5 red / white)
maybe it is the way to go the car pre AMP, and not try to connect the output wire for speakers directly coming from the car radio (by the way the rear ones do no exist)

IMG_1007.JPG

(Sorry for my english...)