Quote: Originally Posted by Putput
Could this perhaps be the answer to the 3D - 3F phenomenon?
Don't think so. The spy circuit should take care of the 3V 12V input. The adaptation I talked about is only needed on the output side...
Quote:
Question about wiring, can you tell me what to connect to pin 17? I found this URL
http://perso.wanadoo.fr/sebire.phili...hargeur_cd.htm explaining all details except if pin 17 is in or out and what voltage it carries? I assume that its an input for the CDC telling that the HU is active but I have to be sure before I fry my HU.
Well, it's called "Remote out" so most probably it's an indication from the head unit indeed.
Pin 16 is permanent 12V, and that allows e.g. for CD tray ejection even if the head unit is OFF, while Pin 17 would tell the CDC to get ready and start sending its "I'm alive" frames once the HU is switched on.
OTOH, on the other pinout I found (see
here), Pin 17 was called "Antenne +" which is rather strange *but* is the same label as a pin of the big iso power connector of the head unit, so that could mean it's a "forwarded" ACC indicator... Some measures of its voltage could confirm that.
Anyway, I would advise not to connect anything to it. This is for sure less risky than putting it on 220V :-).
Mox, can you check on your connects2 if pin 17 is connected to something ? Maybe you have hi-res pictures of the PCB ?
By the way, it would be very interesting to know if the connects2 follows the same "3V/12V" convention. It would be easier to do 0V/12V if it's compatible, but if connects2 bothered making 3V/12V, it's probably a requirement...