Sorry, I'm back again with another question! I think I've figured the wiring for the radiator fan and thermo switch so have been looking at the other wires in that area today and would like to be sure the alternator is wired correctly, the wire at the top of the picture is the green one from the voltage regulator, just under where it says D+ is red from the voltage regulator and the red and black wire with the earth just below that. The red from the starter motor is the thick one on the left.
