@AllanDam, forgive me for hijacking your thread but I have a similar question and I don't want to spam with another thread.
I'm in the process of soldering the original DIN cable back on my 1202. According to the service manual the wiring is the same as in 3000.
I have tried testing for continuity between the DIN cable wires and the DIN pins. I managed to map the following:
Cable BLACK = DIN 5 = Pickup RED
Cable GROUND = DIN 2 = Pickup BLUE/GREEN
Cable SHIELD = DIN outer shield = EARTH?
So far so good, this is all the same as written in the service manual.
The DIN cable also has a white/transparent wire but I cannot get any continuity on any pin in the DIN plug. According to the service manual it should be mapped to DIN 3 but my multimeter shows no continuity.
Before I crack open the original DIN plug on the cable, I was wondering whether it's possible that the transparent DIN cable somehow got detached from the pin inside the DIN plug?
On the outside, the plug looks fine and there's no visible mechanical damage to the DIN plug.