So it seems to me, and you can verify it against where the wires go from there that you have blue wires are rectifier, black and red are positive and negative and yellow and green, one will probably be warning light and maybe the other is ignition.
But what would be interesting is to see that same angle on the regulator you are interested in. If the wire colours go in the same place that those do, it's almost 100 per cent going to be the same. If they don't, that doesn't mean all is lost, but would need further investigation.