All tests were open except from Green-Brown Brown-Green 3.8 ohms.Sonreir said:I'll grab a diagram and post it up early next week.
For the field coil, we can test that, too.
Field coil wires should be either brown and green or black and green, coming from the alternator. In either case, use your multimeter to read resistance between the two wires. Then read resistance between each of the wires and ground.
Post up your readings and we'll take it from there.