I went back to my "building site" today, the V8 standing for ages. Once a car phone was retrofitted, they tapped electricity from the radio. Only since the development of this car phone the radio no longer works. I have now removed all "unnecessary" cables and would like to refit now to standard, say as it was ex works. However, this is difficult because cables are missing or severed everywhere.
Can someone tell me where that comes from with the black plug which cables (with the colors)? That's how I can restore this. Best would be a picture of the plug from behind, so you can see all the cables nice, circuit diagrams are not so my thing

I count on you

Greetings Thomas
ps: it is a 91 model 92er v8 4.2, doesn't know if that makes a difference