connections on the alt are shown as B, IG , L
B on the BJ60 goes to the bus bar, powers all kinds of different things(fuses) it is a white wire. it is also the same as the FJ60. that wire is the same
IG on the BJ60 goes to the engine Labeled fuse, 15A, it is BY in colour. But on the FJ60 it is Y in colour.
Also on the FJ60 this Y wire goes to emmisions control. I think this is the wire that gives the Alt power. to control the field.
L on the BJ60 goes to the Charge fuse 5A. It is a YW colour wire. It is the charge light relay wire.
On the FJ60 this wire is W in colour. It also goes to the charge fuse 5A. Only exception is it shows a diode. this is a USA only mod. In the BJ60 it does not show this diode. Remove it. just trace back from the fuse holder.
ok this looks straight forward to hook up, I understand your wires may be different in colour, so you may have to ring them out to the fuses I mentioned. Also I don't know if it possible that you have the wrong harness connector.? I don't see in the manuals any types of alt that only have two wires.
As well I hope you can see the B, IG , L markings on the Alt.
I will leave my books out of if I can help more.
Good luck