How did you get on? I have today swapped out my alternator and smoke tested to destruction an earth lead - still looking for root cause, however truck started first time, then nothing the next. I traced it to the motor glow plug fues that is in a bank of 5 units to the rear of the start battery - its the brown unit on the 'inner end' of the fuse cluster, rated at 7.5amps. Had a few spares as I am prone to doing stupid shit so all good, running well. Hope this helps