Charging problems Hsv r8

[marx]

Hi all,
Last week my volt gauge was sitting on 15 and after revving up with overtaking it went all the way up till 17 and turned all the electronics off, so I bought a new Mitsubishi alternator and a new battery but doesn't charge, I checked alternator output while running the engine but the multi meter only showed between 1 and 2 volts and kept jumping up and down, but does not charge, I tried everything but no luck, anyone know what the best thing is to do? Do I take it to Holden or can my local auto elec fix this as I have been told by a repco mechanic that he can't read it out coz Hsv don't show up on his tech 2.

 

[lout]

where are you measuring to get 1-2 volts
repco mechanic should be avoided as . how can i say this politely. he is a complete ..........
you dont need tech 2 to diagnose an alternator
or is he trying to diagnose pod gauges, seperate issue

 

[marx]

Hi Lout, he tried to scan the fault code that came on on the dash but could not do it,
I measured the volts straight from the big cable on the back of the alt to the earth on the jump starter bracket, I always thought that the alternator is in straight contact with the battery and have to have same volts

 

[lout]

i dont have a diagram in front of me but you are correct
the heavy cable should go to bat positive. and i dont believe there is a fusible link
trace this heavy cable and look for cable left off at battery clamp or worse put to negative clamp