Recently, my external regulator died, so I purchased a 55amp alternator from a C20 Vanette with internal regulator. Coming from a vehicle with an A14/A15, this was pretty much a bolt on job. Only thing is, my wiring has gone weird (I did connect the white/red to the white black, as mentioned in the wiki). I have a problem where my battery now goes flat in 3 days (brand new battery just fitted three weeks ago too).

Also I noted that from the wiki, where the battery earth connects to the engine block at the oil pump, another earth is apparently supposed to run back to the body, where the horn is located. As this was missing on my ute, I put an earth in as suggested. The only problem is, now the charge light stays lit, even when I've switched the ignition off and removed the key.

Has this possible bad earth, just pointed out to me, that I have something wrong with the way the internal regulated alternator is connected? and this could cause the battery drain I've been getting?

And one other thing, unlike the wiki suggests, I don't appear to have a fusible link that goes from the battery to the alternator, from the positive terminal either. It's just one single wire from the battery to the starter motor, then it looks as if the white/red wire goes to the alternator's 'A' terminal from there. No fusible link whatsoever.