NO!

Does your tach work? Does the speedo work? CAN C is the powertrain CAN. The IC gets data such as eng temp, speed, and vehicle speed from various controllers on the CAN C network. The turn signals are probably being input via CAN B the body CAN.

The point is there are no wires. The signals all come in on two main digital networks. The only way to evaluate them is with a digital computer. Other than a complete assembly the only simple likelyhood in my mind would be a coding issue. Some times unplugging the unit might reboot it in its original coding. More likely it is going to have to be tested by someone who knows what they are doing and has the tooling to enable it.

BTW the two power wires do come from the N10/1 drivers side SAM. You might verify the fuses, although I doubt either circuit could die without massive issues in the cluster.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician