I'm in the process of changing my headunit at the moment (to a VDO CD5404) and have an ISO adaptor for the wiring, so most of the connections will be taken care of. The radio I'm getting though also has a few extra connections which I'd like to wire up (i.e. speed dependent volume) so I need to know the pinout from the wiring loom. I found a diagram of the pinout on the CDR500, so obviously this will tie up to the wiring loom:
The speaker connections are taken care of by the ISO adaptor, as are the GND/ 12V/ BAT/ AERIAL/ Lights connections. However, I'm not sure what the other connections are.
Does anybody know what the functions of these pins are?
My guesses were: SDA/SCL/MRQ MFD pins
TEL Telephone in
SCV Speed controlled volume?
Mainly the speed controlled volume I was after.