Too bad, it doesn't work. Bought a Blaupunkt CD changer cable, cutted the CD changer plug off, connected the Arduino and an 3.5MM jack to the right pins (according to the Pinout found on top of the HU). But it didn't work. No CD changer option available. Arduino did power up though, so did connect all the wires to the right pins of the HU.

Guessing Blaupunkt uses different protocols for different versions of radio's. Maybe someone has some more information about this?

What wire is everyone using when doing the src trick, can you buy it somewhere?

Mattbcon said:

What wire is everyone using when doing the src trick, can you buy it somewhere?

Click to expand...

src trick only works with mk2a stereo. Cable is blue ISO block to 3.5mm jack. Just type 'punto aux' into eBay, should bring plenty up

Yeah I have mk2a , I saw them on there earlier thanks for your help

will it work on the cassette hu

here is the complete guide and connection scheme
thanks to andrea81
http://forum.stiloclub.it/viewtopic.php?f=15&t=25667

Hi
i want to do this with me but the link doesn't work if it can schema and code for arduino

I did a search and came up with this https://forum.arduino.cc/index.php?topic=282752.0. Hopefully it helps.