radio will not turn on

[cvsbimmer]

I install a aftermarket radio in my e39 and I am not sure where to connect the yellow wire for continues power and memory need help.

[KDAWG97M3]

Ok I have one now....99 wagon. 540it if it matters. Business with DSP. I have tested with a new amp and I have put in a new cassette/head unit. Nothing...now here is the weird part...radio is on, I can scan channels, push buttons, change channels, everything...no sound. Any ideas? It sucks with no radio...

[KDAWG97M3]

Bump

[KDAWG97M3]

Bump

[KDAWG97M3]

Bump

[Leedelta]

https://www.youtube.com/watch?v=oLiC...ature=youtu.be Hello everyone! great post! I have the similar problem with my car, but i really want to keep my factory head unit. Please check out my video i made today asking for your help. Thank you all in advance!

https://www.youtube.com/watch?v=oLiC...ature=youtu.be

/www.youtube.com/watch?v=oLiCPJGgWlI&feature=youtu.be

[MazDuh]

Hey all, i know i am bringing this back up from the depths of death but I had this same issue in my non DSP 528iA and I solved it!
Theres a relay in the trunk called the "unloader" relay which cuts some non critical engine functions such as windows, hvac and audio system during cranking.
After a close examination of the wiring diagram, I noticed the unloader relay is one of a couple "checks" in the power system to the main head unit which is the tape deck in my case.
I swapped this relay with the rear defrost and my radio turned on immediately. I swapped them back and the radio would not turn on.

Hope this helps someone in the future!
-Eric