89 surf 2lt blowing 20A engine fuse after replacing alt

[Rory]

so basicly, a mate of mines brought a 89 surf with a 2lt in it.
when he got it, all dash lights were on and battery wasnt charging.
Hes replaced the alternator, now its blowing the 20a engine fuse in the drivers kick trim.

[dillza_69]

is the fuse blowing immediately or intermittently? Im not sure what runs off that fuse with diesel motors, have you tried disconnecting the alternator?

[Rory]

it blows immediatly, with the alternator disconneted, it holds in.
Leads me tobelive its a stuffed alternator, but the wreckers assures him it was tested and working 100%.

[Mr DJ]

If the wrecker is so sure, he won't have a problem swapping it over then.
Will at the very least mean the issue is not with the Alt.

Double check all your earth leads are good.

[Rory]

I now have the smurf in my hands, so iv since found, the plug on the new alternator is diff to the wiring loom plug, different colours.
Im now thinking that the wiring is different between the 2 plugs or something.

[Rory]

And i have no removed the alternator to find he was supplied a external reg alternator and didnt relise.
95% certain that would have been the problem....
now waiting for another correct replacement

[RUFF]

And i have no removed the alternator to find he was supplied a external reg alternator and didnt relise.
95% certain that would have been the problem....
now waiting for another correct replacement

They are a PITA as the same model came with different Alternators. This happens right through the Hilux range. Its allways good to have your old one with you when buying a new one.

[Rory]

oh yea its a huge PITA! Took the one he was supplied and the one first removed and am now waiting for the correct one.

[beinthemud]

And i have no removed the alternator to find he was supplied a external reg alternator and didnt relise.
95% certain that would have been the problem....
now waiting for another correct replacement

They are a PITA as the same model came with different Alternators. This happens right through the Hilux range. Its allways good to have your old one with you when buying a new one.

Whats a PITA

[RAY185]

And i have no removed the alternator to find he was supplied a external reg alternator and didnt relise.
95% certain that would have been the problem....
now waiting for another correct replacement

They are a PITA as the same model came with different Alternators. This happens right through the Hilux range. Its allways good to have your old one with you when buying a new one.

Whats a PITA

Pain In The Arse.

HTH