Are you enquiring to bonding straps or static dischargers?
I guess your talking about Static dischargers which trail from most commonly flight controls, fairings etc as oppose to bonding straps which earth components and structure.
Dischargers can be found in the CDL, as a rough guide:
747 69 fitted Min23
744 68 min 68
777 50 min 20
330 48 20% missing
340 46 20% missing
CDL further breaks down location (i.e. not allo n one wing) Generally the minium is only allowed if operations are not primary dependant on ADF, HF.