The negative cable, which is normally connected to the negative pole of the battery, is fastened to the crankcase. From here, the cable branches off and splits up within the electrical system to carry the ground connection to the different elements in the system.

The image shows the ground connection on left side of the engine crankcase.
The battery charging circuit and power distribution
Electrical power for lighting and signalling devicesDisassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7)
and the detent ball (8).
Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4),
washer (2) and spring (1).
...
Refitting the cooling system hoses and unions
Position the pump/radiator sleeve (22) and the radiator/radiator sleeve (23).
Fit sleeve (23) and sleeve (22) to their corresponding fittings (n) and (o), and
bring them fully home on collars (p).
Note
Sleeves (23) and (22) must be oriented so that the grooves (q) match the
tabs (r) on fitt ...
Rear wheel
Right-hand wheel nut
Washer
Spacer
Valve
Wheel
Circlip
Spare parts catalogue
Diavel abs front and rear wheels
Diavel carbon
abs
front and rear wheels
Important
Bold reference numbers in this section identify parts not shown in the
figures alongside the text, but which can ...