hi all I have a 1964 230 sl which I think is a regulator its located on the right side of engine bay there are 4 wires going to it there is a red and blue together a single black and a single brown there is also a brown wire which im sure goes to the body. on the regulator there are markings df d- d+ could any one kindley show me which colour wires goes to which point on the regulator thank you