Though even Neumann, the leader in microphone standardization, could never quite stick to one color scheme through the decades, I have found that certain (logical) color choices for conductors are prevalent.
Here is my suggestion how to terminate multi-pin microphone cables.
1. 7-pin Tuchel tube mic cables usually Gotham GAC 7 or Doerffler equivalent. Ground pin assignement may vary, depending on the amount of conductors
Pin #1 Audio (+) = white
Pin #2 Audio (-) = black or brown
Pin #3 + Pin #7 = blue (thick)
Pin #4 Heater = red (thick)
Pin #5 B+ - yellow
Pin #6 = variable polarization voltage = green
Always connect cable shields on both ends to ground pins and metal connector sleeves
Do not follow the above pin-outs assignment blindly, but verify that the cable pin-outs correspond to that of the mic in question
4-conductor cables (U47) used with Gotham GAC 7 or equivalent Neumann tube mic cable
Pin #1 Audio (+) = white
Pin #2 Audio (-) = black or brown
Pins #3, 4, 6 ground and shield = thick blue, all interconnected with jumpers plus a jumper wire to the connector's metal sleeve
Pin 5 B+ = thick red
3. XLR 3-conductor interconnect cables usually Gotham GAC 3, Neumann IEC 3, or equivalent
Pin #1 Ground = Green
Pin #2 audio (+) = white
Pin #3 Audio (-) = brown
Always connect cable shields on both ends to ground pins and metal connector sleeves
