1991 300TE 4MATIC: What's this broken wire??

[dieseldaddy]

Hey there electrical gurus.
Can anyone identify this BROKEN wire? I've been having strange electrical issues lately and wonder if this could be part of the problem.




Issues:
1. No tach
2. no kickdown
3. ABS light on all of a sudden
(I thought all 3 were related to bad OVP...replaced with new MB OVP and no go.)
4. 4MATIC stopped working
5. rough idle
6. severe loss of fuel efficiency

All happened at the same time. The loss of #1,2,3 has been off and on. sometimes I could start the car again and all is well. Now no luck.

Any help appreciated.