magneto wiring

[sinkhole]

I have acquired another 20 hp Evinrude made in Canada during the period they were no longer made in the USA. They don't have the OMC codes to identify any information i.e. year of manufacture parts numbers etc. Looking thru Iboats forums I was fortunate to come across a member having the same motor, and asking for info..It was identified by member F R Supreme Mariner as a1975 Model same year as my other motor ,except it has two coils under flywheel both coils with wires disconnected,whereas my other motor just has one driver coil.(see pictures) I'm guessing one coil is for some kind of charging system as I've already removed a kind of plug next to where the fuel tank line connection is. The wire coming from plug terminated at a terminal block on engine. My question is can anyone tell me how to rewire the two coils under flywheel as shown in picure? Thanks for any assistance .