CM870 vibration and black smoke

[Chamberpains]

They usually are the wires that run over to the starter for charging purposes. There will also be the wires that run the a\c compressor, a\c high pressure switch, EGR valve wires, exhaust gas pressure sensor, turbo speed sensor, coolant temp sensor, exhaust pyro sensor (if equiped) and sometimes the low coolant level sensor wires (depending on where the coolant surge tank is) they run all these wires over the engine between the front gear case and valve cover.