Rca

Hi, I am the second owner of a 1969 Yamaha DT1B. The previous owner converted it into a dirt only bike, and removed all of the electrical components, including the 2 lighting coils in the magneto. I am in the process of restoring this bike back to original, including all of the electrical components. I have purchased the 2 new lighting coils, and my question is: Does anyone have information that describes or shows how to properly wire the coils together, so the 2 lighting coils and source coil all work properly? I haven't had any luck locating this information online, or at a Yamaha dealer. Any help would be great!